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X-WR-CALNAME:Department of Theoretical Physics
X-ORIGINAL-URL:https://web-f1.ijs.si
X-WR-CALDESC:Events for Department of Theoretical Physics
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BEGIN:VTIMEZONE
TZID:Europe/Ljubljana
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TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20230326T010000
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TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20231029T010000
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TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20240331T010000
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TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20241027T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231005T140000
DTEND;TZID=Europe/Ljubljana:20231005T153000
DTSTAMP:20260403T195435
CREATED:20230905T071711Z
LAST-MODIFIED:20231005T130914Z
UID:14365-1696514400-1696519800@web-f1.ijs.si
SUMMARY:"Importance of variation in cytoplasm viscoelasticity throughout embryonic cell division"
DESCRIPTION:Speakers: Urša Uršič (Max Planck Institute of Molecular Cell Biology and Genetics)\nThe first few cell divisions are crucial for successful embryonic development of multicellular organisms. In order to divide properly\, a myriad of biochemical and mechanical events need to be precisely coordinated. Mechanical events\, such as positioning of the mitotic spindle\, segregation of chromosomes\, and cytokinesis\, depend on the material properties of the cytoplasm. For more than a century\, studies have consistently shown that the cytoplasm behaves as a viscoelastic material\, with properties changing throughout the cell cycle stages. Nonetheless\, variation of viscoelasticity throughout the cell cycle and its importance for correct embryonic cell division remains poorly understood.We aim to understand how different cytoplasmic components contribute to the viscoelastic properties through different stages of the cell cycle\, focusing on the centrosome positioning mechanisms. We approach this question by using textit{Xenopus Laevis} cytoplasmic extract\, which recapitulates several mechanical and biochemical processes of embryonic cell divisions. Cytoplasmic extracts are valuable model systems because they combine the complexity of textit{in vivo} systems with a wide possibility to be biochemically and mechanically modified. Using magnetic tweezers and introducing magnetic particles into the cytoplasmic extract\, we probe the mechanical properties of the bulk cytoplasm. This reveals drastic increases in the fluidity of the cytoplasm during mitosis.To examine the mechanics of centrosome positioning\, we encapsulate cytoplasmic extract with artificial centrosomes in oil. Interestingly\, the dynamics of microtubules cause centrosomes to oscillate around the geometric center of the droplet\, reaching the center of the droplet consistently at a very precise cell cycle stage of the extract. Linking centrosome positioning and variability of viscoelastic properties of the cytoplasm might offer insight into the mechanics of cell division in large embryonic cells\, a subject that continues to be debated. In the future\, understanding the mechanical properties of cytoplasm in early embryonic cells could reveal a better understanding of human embryonic development\, potentially addressing the challenge of textit{in vitro} fertilization failure.\nhttps://indico.ijs.si/event/1754/
URL:https://web-f1.ijs.si/event/ursa-ursic-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231026T140000
DTEND;TZID=Europe/Ljubljana:20231026T150000
DTSTAMP:20260403T195435
CREATED:20231005T134414Z
LAST-MODIFIED:20231026T125522Z
UID:15365-1698328800-1698332400@web-f1.ijs.si
SUMMARY:Domen Vaupotič\, "Effects of Coarse Graining on Topological Indices of Trees"
DESCRIPTION:https://indico.ijs.si/event/1806/
URL:https://web-f1.ijs.si/event/biophysics-journal-club-marin-sako-industrial-applications-of-cavitation/
LOCATION:C/2-X – F1 čajnica (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231109T140000
DTEND;TZID=Europe/Ljubljana:20231109T150000
DTSTAMP:20260403T195435
CREATED:20231006T100904Z
LAST-MODIFIED:20231109T134503Z
UID:15405-1699538400-1699542000@web-f1.ijs.si
SUMMARY:Biophysics Journal Club: Marin Šako\, "Industrial applications of cavitation"
DESCRIPTION:https://indico.ijs.si/event/1807/
URL:https://web-f1.ijs.si/event/biophysics-journal-club-marin-sako-industrial-applications-of-cavitation-2/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231116T140000
DTEND;TZID=Europe/Ljubljana:20231116T150000
DTSTAMP:20260403T195435
CREATED:20231030T204049Z
LAST-MODIFIED:20231116T142930Z
UID:16240-1700143200-1700146800@web-f1.ijs.si
SUMMARY:Anže Božič\, "Towards improved simple models of electrostatic interactions in patchy colloids and proteins"
DESCRIPTION:https://indico.ijs.si/event/1832/
URL:https://web-f1.ijs.si/event/anze-bozic-towards-improved-simple-models-of-electrostatic-interactions-between-patchy-colloids-and-proteins/
LOCATION:C/2-X – F1 čajnica (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231123T141500
DTEND;TZID=Europe/Ljubljana:20231123T151500
DTSTAMP:20260403T195435
CREATED:20231030T204050Z
LAST-MODIFIED:20231123T135354Z
UID:16241-1700748900-1700752500@web-f1.ijs.si
SUMMARY:Matej Kanduč\, "The enigmatic boundary between hydrophilic and hydrophobic"
DESCRIPTION:Hydrophobic attraction\, macromolecule adhesion\, and even biofouling occur when the surface contact angle exceeds 65°\, known as the “Berg limit.” While this threshold seems widely applicable\, the reasons behind its universality remain unclear. In the seminar\, I will discuss our current knowledge of this threshold and explore possible underlying mechanisms.\nhttps://indico.ijs.si/event/1833/
URL:https://web-f1.ijs.si/event/matej-kanduc-tba/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231207T140000
DTEND;TZID=Europe/Ljubljana:20231207T150000
DTSTAMP:20260403T195435
CREATED:20231201T113522Z
LAST-MODIFIED:20231207T135528Z
UID:17359-1701957600-1701961200@web-f1.ijs.si
SUMMARY:XBW preparation
DESCRIPTION:Vita Movrin\, “Active dynamics of wound closure”Urban Zeleznik\, “Topological Transformations in Graph Vertex Model”Marin Sako\, “Tensile strength of water with organic impurities”\nhttps://indico.ijs.si/event/1872/
URL:https://web-f1.ijs.si/event/xbw-preparation/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231214T140000
DTEND;TZID=Europe/Ljubljana:20231214T153000
DTSTAMP:20260403T195435
CREATED:20230918T095350Z
LAST-MODIFIED:20231214T133710Z
UID:14795-1702562400-1702567800@web-f1.ijs.si
SUMMARY:"Understanding bacterial inactivation with cavitation at the single cell level"
DESCRIPTION:Speakers: Žiga Pandur (Faculty of Mechanical Engineering)\nCavitation\, a sudden decrease in pressure that triggers the formation of vapor and gas bubbles in a liquid medium\, can cause many important industrial problems\, such as material loss\, noise and vibrations in hydraulic machinery. On the other hand\, due to the extreme conditions during growth and collapse of vapor bubbles\, cavitation can be a potentially useful phenomenon. for surface cleaning\, chemical enhancement and wastewater treatment (i.e. bacterial eradication and virus inactivation). Despite extensive research in recent years\, there is still a large gap between understanding the mechanisms that contribute to the effects of cavitation and its application. Although engineers have already commercialized devices that use cavitation\, we are still not able to answer the fundamental questions\, such as how bubbles increase chemical activity disinfect\, clean\, and how they affect bacterial cells.In this work we have investigated the effects of cavitation on simple cell model systems–and compared it with other known chemical\, physical and mechanical stress factors. We showed that the fragile but compliant structure of the lipid bilayer is effectively destroyed by acoustic or hydrodynamic cavitation. We have investigated how different modifications of the cell wall of Gram-negative bacteria (Escherichia coli) affect cell stability during sonication and found that peptidoglycan layer modifications significantly increase susceptibility to sonolysis. To investigate the interaction between individual cavitation bubble and bacterial cell\, we have developed a new method to generate single micrometer size cavitation bubble. The combination of optical tweezers and high-voltage discharge allowed us to generate cavitation microbubbles precisely in space and time. At the center of the imploding microbubble\, the cells get detached\, followed by the area of damaged cells. The results indicate that only the cells in the immediate vicinity of the collapsing bubble were affected. The numerical model of bubble collapse allowed us to determine the threshold values of hydrodynamic forces and wall shear stress for cell detachment and cell death.Quantifying mechanical stability response of bacteria to high-frequency perturbations reveals the mechanisms behind the cleaning effects of cavitation\, and also provides a unique tool to characterize the high-frequency mechanical stress response of different biological materials. Our work contributes to a better understanding of the effects of cavitation on bacterial cells and promotes further development of cavitation applications to remove or eradicate bacteria.\nhttps://indico.ijs.si/event/1777/
URL:https://web-f1.ijs.si/event/ziga-pandur-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20231221T140000
DTEND;TZID=Europe/Ljubljana:20231221T150000
DTSTAMP:20260403T195435
CREATED:20231030T204050Z
LAST-MODIFIED:20231221T135436Z
UID:16242-1703167200-1703170800@web-f1.ijs.si
SUMMARY:Biophysics Journal Club: Tanmoy Sarkar\, "Inclusion of adaptive tension and strain in vertex model"
DESCRIPTION:https://indico.ijs.si/event/1834/
URL:https://web-f1.ijs.si/event/tanmoy-sarkar-tba-2/
LOCATION:C/2-X – F1 čajnica (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240111T141500
DTEND;TZID=Europe/Ljubljana:20240111T151500
DTSTAMP:20260403T195435
CREATED:20231013T014224Z
LAST-MODIFIED:20240111T140947Z
UID:15598-1704982500-1704986100@web-f1.ijs.si
SUMMARY:"Studies of bees with smart sensors: at the crossroads of biology\, physics\, and AI"
DESCRIPTION:Speakers: Anton Gradišek (Jožef Stefan Institute)\nHoneybees and bumblebees are social insects and are among the most important pollinators in their ecosystems. They are fascinating creatures and even if we think that we know them well\, there is still much to discover about their lives. In the seminar\, I will present an overview of the studies we carried out especially in the field of bumblebee research. We used several sensors\, especially microphones and thermometers\, to investigate the daily dynamics of the colony. At the end\, I will outline the current project we are working on\, we will be using smart sensors to monitor stress on honeybee colonies in the presence of external stressors.\nhttps://indico.ijs.si/event/1770/
URL:https://web-f1.ijs.si/event/anton-gradisek-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240125T140000
DTEND;TZID=Europe/Ljubljana:20240125T150000
DTSTAMP:20260403T195435
CREATED:20231201T113522Z
LAST-MODIFIED:20240125T134550Z
UID:17360-1706191200-1706194800@web-f1.ijs.si
SUMMARY:Jules Morand\, "Emergent circulation patterns from anonymized mobility data: Clustering Italy in the time of Covid"
DESCRIPTION:Speakers: Jules Morand (Department of Physics\, University of Trento)\nhttps://indico.ijs.si/event/1873/
URL:https://web-f1.ijs.si/event/jules-morand-emergent-circulation-patterns-from-anonymized-mobility-data-clustering-italy-in-the-time-of-covid/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240201T140000
DTEND;TZID=Europe/Ljubljana:20240201T150000
DTSTAMP:20260403T195435
CREATED:20240103T100856Z
LAST-MODIFIED:20240201T132455Z
UID:18635-1706796000-1706799600@web-f1.ijs.si
SUMMARY:Fran Ivan Vrban\, "Many-body effects in microgel suspensions"
DESCRIPTION:Even though there are clear indications of many-body interactions in the dense microgel suspensions\, there is still no adequate general description of the phenomena. One possible avenue for exploration of many-body effects is the coarse-grained liquid-drop model\, where the soft matter constituents are regarded as compressible drops with a well-defined surface. The interplay between particle’s bulk and surface energy plays the key role in the system characterization\, along with the geometry constraints. In this seminar\, the general overview of the many-body interactions in field will be presented\, as well as the relevant techniques and results of the liquid-drop model.\nhttps://indico.ijs.si/event/1956/
URL:https://web-f1.ijs.si/event/fran-ivan-vrban-tba/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240207T140000
DTEND;TZID=Europe/Ljubljana:20240207T150000
DTSTAMP:20260403T195435
CREATED:20231110T094025Z
LAST-MODIFIED:20240207T134150Z
UID:16640-1707314400-1707318000@web-f1.ijs.si
SUMMARY:Marin Šako\, "Physics of bubble oscillations"
DESCRIPTION:Bubbles in liquids\, soft and squeezy objects made of gas and vapour\, yet so strong as to destroy any material. At first glance bubbles in water might seem like trivial objects with simple physics describing them. However\, upon further investigation one finds many interesting phenomena. In this talk I will present Rayleigh–Plesset equation\, a mathematical framework for describing bubble oscillations\, as well as an overview of some notable solutions.\nhttps://indico.ijs.si/event/1844/
URL:https://web-f1.ijs.si/event/marin-sako-tba-2/
LOCATION:C/2-X – F1 čajnica (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240215T141500
DTEND;TZID=Europe/Ljubljana:20240215T151500
DTSTAMP:20260403T195435
CREATED:20231117T010307Z
LAST-MODIFIED:20240208T195357Z
UID:16860-1708006500-1708010100@web-f1.ijs.si
SUMMARY:"One\, two\, three\, four: simple additions of nucleic acid strands for complex functional outcomes"
DESCRIPTION:Speakers: Maja Marušič (National Institute of Chemistry)\nNucleic acids display a range of structural variations beyond the basic helical shape and Watson-Crick hydrogen bond pairing. Some of these structural variations are nuanced\, while others result in a vastly different spatial conformation. We will discuss the structural details of single-\, double-\, triple- and quadruple-stranded nucleic acids and how structural variation translates into functional diversity. What can in vitro biophysical methods reveal about the nucleic acid structure\, how can we correlate findings from diverse methods\, and when is this approach suitable and when not? Insights into these and related questions will be provided using adenine-rich DNA systems\, AT/GC repeat regions\, PNA-RNA complexes and 3′ untranslated regions of mRNA.\nhttps://indico.ijs.si/event/1769/
URL:https://web-f1.ijs.si/event/one-two-three-four-simple-additions-of-nucleic-acid-strands-for-complex-functional-outcomes/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240222T140000
DTEND;TZID=Europe/Ljubljana:20240222T150000
DTSTAMP:20260403T195435
CREATED:20231201T113522Z
LAST-MODIFIED:20240208T195357Z
UID:17361-1708610400-1708614000@web-f1.ijs.si
SUMMARY:Veronika Bukina (TBA)
DESCRIPTION:https://indico.ijs.si/event/1874/
URL:https://web-f1.ijs.si/event/veronika-bukina-tba-2/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240229T140000
DTEND;TZID=Europe/Ljubljana:20240229T150000
DTSTAMP:20260403T195435
CREATED:20231201T113522Z
LAST-MODIFIED:20240229T132416Z
UID:17362-1709215200-1709218800@web-f1.ijs.si
SUMMARY:Urška Andrenšek\, "Thickness modulation in supported epithelial sheets"
DESCRIPTION:Surface patterns in epithelial tissues often arise due to effects of differential surface tension and elastic properties of supporting structures\, such as basal membrane and bulk elastic substrate. While we cannot clearly distinguish between surface-tension and elastic contributions only from measurement of wave-length of surface patterns\, thickness modulation of the tissue might give a better insight into the origins of specific pattern formation. Depending on magnitude of surface-tension and elastic energy contributions\, the thickness modulation can change its amplitude and phase. I will present the theoretical predictions of effects that differential surface tension\, basal membrane and elastic substrate have on surface-pattern formation and thickness modulation in mono-layered epithelial sheets.\nhttps://indico.ijs.si/event/1875/
URL:https://web-f1.ijs.si/event/urska-andrensek-tba/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240314T140000
DTEND;TZID=Europe/Ljubljana:20240314T153000
DTSTAMP:20260403T195435
CREATED:20231215T003726Z
LAST-MODIFIED:20240307T213946Z
UID:17885-1710424800-1710430200@web-f1.ijs.si
SUMMARY:Mojca Krajnc (TBA)
DESCRIPTION:Speakers: Mojca Krajnc (Biotechnical Faculty)\nhttps://indico.ijs.si/event/1778/
URL:https://web-f1.ijs.si/event/mojca-krajnc-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240319T140000
DTEND;TZID=Europe/Ljubljana:20240319T150000
DTSTAMP:20260403T195435
CREATED:20240301T121234Z
LAST-MODIFIED:20240319T133334Z
UID:20234-1710856800-1710860400@web-f1.ijs.si
SUMMARY:Marco Gorghetto: Early vs late string networks from a minimal QCD Axion
DESCRIPTION:We propose a new regime of minimal QCD axion dark matter that lies between the pre- and post-inflationary scenarios\, such that the Peccei-Quinn (PQ) symmetry is restored only on sufficiently large spatial scales. This leads to a novel cosmological evolution\, in which strings and domain walls re-enter the horizon and annihilate later than in the ordinary post-inflationary regime\, possibly even after the QCD crossover. Such dynamics can occur if the PQ symmetry is restored by inflationary fluctuations\, i.e. the Hubble parameter during inflation $H_I$ is larger than the PQ breaking scale $f_a$\, but it is not thermally restored afterwards. Solving the Fokker-Planck equation\, we estimate the number of inflationary e-folds required for the PQ symmetry to be\, on average\, restored. Moreover\, we show that\, in the large parts of parameter space where the radial mode is displaced from the minimum by de Sitter fluctuations\, a string network forms due to the radial mode oscillating over the top of its potential after inflation. In both cases we identify order one ranges in $H_I/f_a$ and in the quartic coupling $lambda$ of the PQ potential that lead to the late-string dynamics. In this regime the cosmological dark matter abundance can be reproduced for axion decay constants as low as the astrophysical constraint 𝒪$(10^8)$ GeV\, corresponding to axion masses up to $10^{-2}$ eV\, and with miniclusters with masses as large as 𝒪(10) solar masses.\nhttps://indico.ijs.si/event/1997/
URL:https://web-f1.ijs.si/event/marco-gorghetto-early-vs-late-string-networks-from-a-minimal-qcd-axion/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (F1 tea room)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240328T140000
DTEND;TZID=Europe/Ljubljana:20240328T150000
DTSTAMP:20260403T195435
CREATED:20230927T154646Z
LAST-MODIFIED:20240312T103046Z
UID:15095-1711634400-1711638000@web-f1.ijs.si
SUMMARY:"Dynamics of Ribonucleoprotein Assembly in Time and Space"
DESCRIPTION:Speakers: Miha Modic (National Institute of Chemistry)\nSuccessful embryo implantation induces rapid morphological progression from rosette to lumen and then to gastrulation\, which is closely coordinated with cell fate transition. By integrating machine learning\, metabolic RNA sequencing\, iCLIP\, and proteomics of the protein-RNA interactome with embryology\, I will present a blueprint for understanding how multilayered molecular networks coordinate developmental transitions. I will highlight three studies that demonstrate how cross-regulatory molecular logic ensures the robustness of developmental signalling pathways to rewire ribonucleoprotein assembly to drive cell fate transitions (Modic et al.\, 2023)\, important for the onset of gastrulation (Modic et al.\, 2019) and embryonic morphogenesis (Modic & van Genderen et al\, in resubmission; Modic et al.\, Biorxiv 2021).\nhttps://indico.ijs.si/event/1799/
URL:https://web-f1.ijs.si/event/poised-pabp-rna-hubs-implement-signal-dependent-mrna-decay-in-development/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240404T140000
DTEND;TZID=Europe/Ljubljana:20240404T150000
DTSTAMP:20260403T195435
CREATED:20240323T012943Z
LAST-MODIFIED:20240404T125047Z
UID:22114-1712239200-1712242800@web-f1.ijs.si
SUMMARY:Fabio Staniscia\, "Line adsorption in sessile droplets"
DESCRIPTION:https://indico.ijs.si/event/2075/
URL:https://web-f1.ijs.si/event/fabio-staniscia-tba-2/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240411T141500
DTEND;TZID=Europe/Ljubljana:20240411T151500
DTSTAMP:20260403T195435
CREATED:20240112T004541Z
LAST-MODIFIED:20240411T130106Z
UID:18958-1712844900-1712848500@web-f1.ijs.si
SUMMARY:Boštjan Vihar\, "Developing in vitro models of human tissues"
DESCRIPTION:Speakers: Boštjan Vihar (IBV MF UM)\nThe presentation will establish basic concepts of tissue engineering\, 3D biofabrication and the development of microphysiological systems\, and provide insight into some of the work in progress at the Institute of Biomedical Sciences\, Faculty of Medicine\, University of Maribor (IBV).The development of advanced in vitro models of human tissues stands at the forefront of advancing medical sciences by developing innovative solutions to complex health issues and requires an interdisciplinary approach combining different fields such as cell and molecular biology\, biochemistry\, materials science\, additive technologies. The development process can vary substantially depending on the target tissue/application and the expected functional characteristics.At IBV different aspects of in vitro tissue model development are explored in parallel and in synergy in the hopes of obtaining new insights into the (patho)physiology of human tissues and organs and creating new ways for the treatment of complex diseases and personalized medicine.Our research activities include the cell culture of immortalized and primary cell lines\, which are also isolated and characterization in-house. In parallel\, polymer-based hydrogel formulations are developed to mimic the physico-chemical properties of native tissues and are combined with cells to form bioinks. Using extrusion-based\, microfluidics and lithographic 3D printing techniques\, tissue scaffolds and custom-made microfluidic devices are developed and integrated into microphysiological systems (organ-on-a-chip devices) which allow prolonged maturation\, continuous monitoring and functional analysis.\nhttps://indico.ijs.si/event/1866/
URL:https://web-f1.ijs.si/event/bostjan-vihar-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240418T140000
DTEND;TZID=Europe/Ljubljana:20240418T150000
DTSTAMP:20260403T195435
CREATED:20240323T012943Z
LAST-MODIFIED:20240408T075553Z
UID:22115-1713448800-1713452400@web-f1.ijs.si
SUMMARY:Labrini Athanasopoulou (TBA)
DESCRIPTION:https://indico.ijs.si/event/2076/
URL:https://web-f1.ijs.si/event/labrini-athanasopoulou-tba/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240509T140000
DTEND;TZID=Europe/Ljubljana:20240509T150000
DTSTAMP:20260403T195435
CREATED:20240313T125226Z
LAST-MODIFIED:20240509T123626Z
UID:21331-1715263200-1715266800@web-f1.ijs.si
SUMMARY:Maciej Kierkla: EFT of supercooled phase transition
DESCRIPTION:We present an analysis of the first-order supercooled phase transition associated with symmetry breaking in the early Universe in a classically scale-invariant model. We analyze the role of higher order thermal corrections for these transitions\, and to what extent they can be computed using dimensionally reduced effective field theory (3D EFT). This framework requires high temperature (HT) expansion to be valid\, which seems challenging due to the presence of supercooling. We show how to reliably use the HT expansion in dimensionally reduced theory for the calculation of bubble nucleation rate. We compare the obtained results to the results of the most common scheme based on the so-called daisy resummation. We further compute all of phase transition characteristics\, discuss various scenarios of completing the transition and predict resulting gravitational-wave spectra and their observational prospects in future experiments such as LISA.\nhttps://indico.ijs.si/event/2070/
URL:https://web-f1.ijs.si/event/maciej-kierkla/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (F1 tea room)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240516T140000
DTEND;TZID=Europe/Ljubljana:20240516T150000
DTSTAMP:20260403T195435
CREATED:20240427T073727Z
LAST-MODIFIED:20240516T122650Z
UID:25080-1715868000-1715871600@web-f1.ijs.si
SUMMARY:Lorenzo Ubaldi: False Vacuum Decay From Thin to Thick Walls
DESCRIPTION:The computation of the false vacuum decay rate in the situation with nearly degenerate vacua can be performed analytically in the well known thin wall approximation. If we depart from the near degeneracy of the vacua\, the approximation quickly ceases to work. This statement is known to practitioners of the field\, but it has a caveat: it is true only if one works at the leading order of the thin wall approximation. In this talk I will describe how to organize the calculation to systematically include higher order corrections in the thin wall parameter expansion. The first few orders can be computed analytically. It is enough to include them to improve the approximation and get a very accurate estimate of the bounce action also deep into thick wall regimes\, where the vacua are far apart. I plan to also briefly discuss how to deal in these cases with the calculation of the functional determinant\, also known as the prefactor\, in order to have the full proper understanding of the vacuum decay rate. In the whole talk I will only consider flat spacetime\, without gravity.\nhttps://indico.ijs.si/event/2133/
URL:https://web-f1.ijs.si/event/lorenzo-ubaldi-false-vacuum-decay-from-thin-to-thick-walls/
LOCATION:https://uu-se.zoom.us/j/64706033081 Passcode: 107002 (Zoom)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240521T140000
DTEND;TZID=Europe/Ljubljana:20240521T150000
DTSTAMP:20260403T195435
CREATED:20240429T092123Z
LAST-MODIFIED:20240521T112538Z
UID:25290-1716300000-1716303600@web-f1.ijs.si
SUMMARY:Diego Redigolo: Dark sectors at flavor factories
DESCRIPTION:I will discuss new ideas for reporpusing current flavor experiments to hunt for dark sectors particles. \nhttps://indico.ijs.si/event/2134/
URL:https://web-f1.ijs.si/event/diego-redigolo/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (F1 tea room)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240523T140000
DTEND;TZID=Europe/Ljubljana:20240523T150000
DTSTAMP:20260403T195435
CREATED:20240416T100220Z
LAST-MODIFIED:20240515T142738Z
UID:24106-1716472800-1716476400@web-f1.ijs.si
SUMMARY:Nudžeim Selimović
DESCRIPTION:https://indico.ijs.si/event/2089/
URL:https://web-f1.ijs.si/event/nudzeim-selimovic/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (F1 tea room)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240523T140000
DTEND;TZID=Europe/Ljubljana:20240523T150000
DTSTAMP:20260403T195435
CREATED:20240418T101241Z
LAST-MODIFIED:20240523T123631Z
UID:24290-1716472800-1716476400@web-f1.ijs.si
SUMMARY:Gašper Lipnik\, "Force inference in epithelial tissues"
DESCRIPTION:In this work\, we explore the ways of determining the mechanical properties of epithelial tissues. Knowledge of the mechanical parameters like forces between and pressures within cells leads to a deeper understanding of the processes in these tissues. To determine these parameters\, one can perform in vivo measurements using lasers\, optical tweezers\, micropipettes etc. However\, in vivo measurements are invasive\, technically challenging and local. Thus\, it is best to use noninvasive and global methods. One theoretical approach is force inference from cell shapes and connectivity as seen in microscope images\, and here we introduce three force inference methods.\nhttps://indico.ijs.si/event/2091/
URL:https://web-f1.ijs.si/event/gasper-lipnik-force-inference-in-epithelial-tissues/
LOCATION:C/0-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240528T134500
DTEND;TZID=Europe/Ljubljana:20240528T144500
DTSTAMP:20260403T195435
CREATED:20240510T110600Z
LAST-MODIFIED:20240528T114345Z
UID:26366-1716903900-1716907500@web-f1.ijs.si
SUMMARY:Innes Bigaran: Leveraging intermediate resonances to probe CP-violation at colliders
DESCRIPTION:We study the phenomenological implications of interference between tree-level contributions to decays to three-body final states. CP-violation in these decays arise via different virtualities of intermediate resonances\, and the presence of SM and/or new CP phases in a model Lagrangian. We highlight the manifestation of this CP-violating observable in the interference between SM charged-current decays and new-physics contributions to effective vector interactions in the EFT and in a UV-complete model featuring a scalar leptoquark\, $S_1$. We present a novel method for searching for CP-violating new physics effects utilising the differential cross sections of $ppto d_i ell u_ell$ decays\, with a detailed study of $ppto b tau u_tau$ simulating signal and background.\nhttps://indico.ijs.si/event/2146/
URL:https://web-f1.ijs.si/event/innes-bigaran/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (F1 tea room)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240530T140000
DTEND;TZID=Europe/Ljubljana:20240530T150000
DTSTAMP:20260403T195435
CREATED:20240411T144041Z
LAST-MODIFIED:20240530T115521Z
UID:23648-1717077600-1717081200@web-f1.ijs.si
SUMMARY:Mario Reig Lopez: Testing the far UV of the Standard Model with axions
DESCRIPTION:In this talk I will discuss axion couplings to gauge bosons in 4-dimensional Grand Unified Theories and in (heterotic) String Theory. The topological nature of these couplings allows them to be matched from the UV to the IR\, and the ratio of the anomaly with photons and gluons for any axion is fixed by unification.  I will show that this implies that there is a single axion — the QCD axion — with an anomalous coupling to photons. Other light axion-like particles can couple to photons by mixing with the QCD axion\, and necessarily lie to the right of the QCD line prediction in the mass-coupling plane. As a result\, a discovery of an axion to the left of the QCD line can rule out simple GUTs and some heterotic string compactifications.Based on: 2206.07053 and future work.\nhttps://indico.ijs.si/event/2085/
URL:https://web-f1.ijs.si/event/mario-reig-lopez/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (F1 tea room)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240610T120000
DTEND;TZID=Europe/Ljubljana:20240610T130000
DTSTAMP:20260403T195435
CREATED:20240506T132140Z
LAST-MODIFIED:20240610T104412Z
UID:25974-1718020800-1718024400@web-f1.ijs.si
SUMMARY:Bernat Corominas-Murtra\, "Topological transitions and cell-cell adhesion properties in development"
DESCRIPTION:Speakers: Bernat Corominas-Murtra (Karl-Franzens University Graz)\nThe developmental process implies precise but significant changes in the geometry and structure of the embryonic tissues. Recent results show that apparently minor changes in adhesion at the local level of cell-cell contacts trigger deep\, non-linear transitions in the topological organization of the whole embryonic tissue and\, in consequence\, change its material properties and facilitate geometrical deformations. Open questions remain\, like the potential existence of causal feedbacks between cell differentiation processes and the potential heterogeneity of topological patterns existing within the tissue. The results presented in this talk are based on the fundamental assumption that predictive frameworks in theoretical biology must explore the  connection between different scales of the system. In this particular case\, we use topology to establish a bridge between the system’s scales defined by i) the cell level and ii) the tissue level. This enables us to predict global\, non-trivial behaviours in tissues from the empirically feasible observables related to the mechanical properties of single cells.\nhttps://indico.ijs.si/event/2139/
URL:https://web-f1.ijs.si/event/bernat-corominas-murtra-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20240613T141500
DTEND;TZID=Europe/Ljubljana:20240613T151500
DTSTAMP:20260403T195435
CREATED:20240506T132140Z
LAST-MODIFIED:20240611T231915Z
UID:25975-1718288100-1718291700@web-f1.ijs.si
SUMMARY:Tatyana Gavrilchenko\, "Lessons from the tracheal terminal cell: what a unicellular network can teach us about distribution network design principles"
DESCRIPTION:Speakers: Tatyana Gavrilchenko (Flatiron Institute\, NY\, USA)\nThe insect respiratory system is a network of air-filled tubes permeating the animal body\, supplying oxygen for metabolic activity and removing waste carbon dioxide. The majority of gas exchange occurs in the finest regions of the tracheal system\, the terminal cells. These cells have a unique and highly specialized tree-like structure with long thin branches\, reminiscent of neuronal arbors. While many aspects of the terminal cell are understood on a molecular level\, including the mechanisms that guide branch extension and lumen formation\, the macroscopic network features that allow for proper oxygen distribution remain mysterious. We use the Drosophila terminal cell as a model system for fundamental developmental problems of network structure and functions\, utilizing an imaging data set that fully maps the structure of over one hundred individual cells. First\, we find that scaling relations succinctly encapsulate the dynamics of growing networks\, and use the empirical scalings observed in the terminal cells to construct a minimal model of network growth that describes the system. Second\, to understand the interplay between structure and function in the trees\, we developed a model of oxygen distribution by a network embedded in a two-dimensional absorbing tissue\, driven purely by diffusion along oxygen partial pressure gradients. Our method works well on complex geometries\, including curved and branched networks that approximate the geometry of the terminal cells. These investigations offer insights into mammalian capillary networks\, which have different structural features and delivery mechanisms from terminal cells but are guided by similar developmental principles. Understanding the salient features that govern the structure of these biological networks is essential to designing synthetic vasculature\, a major step in the manufacture of artificial organs.\nhttps://indico.ijs.si/event/2138/
URL:https://web-f1.ijs.si/event/tatyana-gavrilchenko-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
END:VCALENDAR