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PRODID:-//Department of Theoretical Physics - ECPv6.5.1.5//NONSGML v1.0//EN
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METHOD:PUBLISH
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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X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Ljubljana
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20260329T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20261025T010000
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END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260602T110000
DTEND;TZID=Europe/Ljubljana:20260602T120000
DTSTAMP:20261007T220445
CREATED:20260520T143543Z
LAST-MODIFIED:20260602T095111Z
UID:96536-1780398000-1780401600@web-f1.ijs.si
SUMMARY:Ezequiel Alvarez: Leveraging Biased Simulations with Bayesian inference
DESCRIPTION:Scientific measurements often yield data that are mixtures of signal and one or more background components. When class templates (e.g.\, simulation-based priors) are biased or imprecise\, they are typically treated as nuisance systematics. We take a different route: by embedding imprecise priors in a hierarchical Bayesian mixture model and combining them with observed mixed data via Bayesian machine learning\, we adapt class shapes toward the true distributions and obtain an unbiased posterior estimate of the signal fraction with calibrated uncertainties. In practice this lets us exploit simulation even when it is imperfect—improving template fidelity during inference. We demonstrate the approach on a collider-physics example (di-Higgs → 4b at the LHC)\,  and show how the same framework can enhance and unbias the ABCD background-estimation method.  The framework\, Template-Adapted Mixture Model (TAMM\, arXiv:2604.022219)\, is straightforward to implement\, scales to high-dimensional and complex distributions\, and is broadly applicable across HEP\, astrophysics\, cosmology\, and any domain with mixed data and imperfect priors.\nhttps://indico.ijs.si/event/3833/
URL:https://web-f1.ijs.si/event/ezequiel-alvarez-2/
LOCATION:F1 tea room
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260618T140000
DTEND;TZID=Europe/Ljubljana:20260618T150000
DTSTAMP:20261007T220445
CREATED:20260119T130431Z
LAST-MODIFIED:20260618T122248Z
UID:85166-1781791200-1781794800@web-f1.ijs.si
SUMMARY:Ekaterina Poliukhina\, "Direct measurement of protein-protein interaction potentials by cryo-electron tomography"
DESCRIPTION:Protein-protein interactions control how proteins behave in solution\, dictating aggregation\, crystallization\, phase separation\, and the colloidal stability of formulations central to pharmacology\, food science\, and biotechnology. Predicting this behavior has long been difficult: theories borrowed from classical colloid science fail for proteins\, which are irregularly shaped and chemically heterogeneous\, and no direct experimental route to the underlying interaction potential has been available. Cryo-electron tomography now provides such a route. By reconstructing three-dimensional tomograms containing thousands of individual proteins\, the spatial distribution of every particle can be recovered and converted\, without any assumed functional form\, into a measured interaction potential. Validated against analytical ultracentrifugation and small-angle X-ray scattering\, the approach spans globular proteins from lysozyme to apoferritin and reveals how ionic strength\, pH\, temperature\, and additives reshape their interactions.\nhttps://indico.ijs.si/event/3599/
URL:https://web-f1.ijs.si/event/stephane-jedele-tba/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260716T110000
DTEND;TZID=Europe/Ljubljana:20260716T120000
DTSTAMP:20261007T220445
CREATED:20260528T013639Z
LAST-MODIFIED:20260716T094147Z
UID:97194-1784199600-1784203200@web-f1.ijs.si
SUMMARY:Maximilian Bachmaier: The slingshot effect and its cosmological implications
DESCRIPTION:In my talk\, I will present the so-called slingshot effect. It represents a general phenomenon that occurs when a localized source\, such as a magnetic monopole\, quark\, or a D-brane\, crosses a wall separating the confined (Higgsed) and unconfined (Coulomb) phases. The crossover is accompanied by a stretched string that confines the source to the wall. The string tension accelerates the source towards the wall as sort of a slingshot. The effect can take place in different setups\, such as phase transitions leading to both electric and magnetic confinement\, as well as in string cosmology involving D-branes. I will discuss the role of this phenomenon in sourcing gravitational waves. \nhttps://indico.ijs.si/event/3895/
URL:https://web-f1.ijs.si/event/maximilian-bachmaier-the-slingshot-effect-and-its-cosmological-implications/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260723T140000
DTEND;TZID=Europe/Ljubljana:20260723T150000
DTSTAMP:20261007T220445
CREATED:20260721T012314Z
LAST-MODIFIED:20260723T123855Z
UID:102503-1784815200-1784818800@web-f1.ijs.si
SUMMARY:Gerd Schroeder-Turk\, "Universal hidden order in amorphous cellular geometries"
DESCRIPTION:Partitioning space into cells with certain extreme geometrical properties is a central problem in many fields of science and technology. Here we investigate the Quantizer problem\, defined as the optimisation of the moment of inertia of Voronoi cells\, i.e.\, similarly-sized ‘sphere-like’ polyhedra that tile space are preferred. We employ Lloyd’s centroidal Voronoi diagram algorithm to solve this problem and find that it converges to disordered states associated with deep local minima. These states are universal in the sense that their structure factors are characterised by a complete independence of a wide class of initial conditions they evolved from. They moreover exhibit an anomalous suppression of long-wavelength density fluctuations and quickly become effectively hyperuniform. Our findings warrant the search for novel amorphous hyperuniform phases and cellular materials with unique physical properties.\nhttps://indico.ijs.si/event/4003/
URL:https://web-f1.ijs.si/event/gerd-schroeder-turk-universal-hidden-order-in-amorphous-cellular-geometries/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260728T140000
DTEND;TZID=Europe/Ljubljana:20260728T150000
DTSTAMP:20261007T220445
CREATED:20260726T192204Z
LAST-MODIFIED:20260728T123925Z
UID:103097-1785247200-1785250800@web-f1.ijs.si
SUMMARY:Michael Dimitriyev\, "Transformations and defect structures in liquid networks"
DESCRIPTION:The lyotropic liquid crystals formed by amphiphiles include lamellar and cylindrical phases with smectic A and columnar order\, respectively\, representing both 2D and 1D layered liquids. Bicontinuous networks form at intermediate compositions and consist of liquid-like interfaces\, combining both layer and cylindrical geometries\, that percolate all three dimensions. Of the bicontinuous networks\, the predominant structures are based on gyroid\, diamond\, and primitive minimal surfaces\, all of which have cubic crystal symmetries. While possessing a rigidity and 3D elasticity description of conventional solids\, mass transport along interfaces lead to complex\, non-affine relaxation modes. We consider a liquid network model that is able to capture the non-affine deformations observed in bicontinuous networks formed by block copolymers. We additionally identify topology-preserving transformation pathways between different network phases enabled by mass transport along interfaces\, uncovering conditions under which the bicontinuous double diamond is a transition state between stable double gyroid and a metastable tetragonal network phase. Finally\, we consider a new model of the general structure and free energy of inhomogeneous deformations and defects in bicontinuous networks.\nhttps://indico.ijs.si/event/4010/
URL:https://web-f1.ijs.si/event/michael-dimitriyev-transformations-and-defect-structures-in-liquid-networks/
LOCATION:C/2-X – F1 čajnica (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260730T140000
DTEND;TZID=Europe/Ljubljana:20260730T150000
DTSTAMP:20261007T220445
CREATED:20260726T192204Z
LAST-MODIFIED:20260730T124310Z
UID:103098-1785420000-1785423600@web-f1.ijs.si
SUMMARY:Sascha Hilgenfeldt\, "Tissue modeling: Insight from continuum mechanics"
DESCRIPTION:Two-dimensional vertex models have been used extensively to study and simulate the mechanical behavior of monolayer tissues\, a simplified approach that allows for detailed study of structure and disorder in large systems. Morphological indicators from the structure are then taken as indicators for mechanical behavior and even biological fitness. The most common 2D vertex models use generic elasticity terms whose validity has not been closely scrutinized. Starting from experimental data from MDCK epithelial cells\, we question (i) the appropriateness of a 2D model in the light of severe breaking of mechanical symmetry along the apical-basal axis\, and (ii) the accuracy of the functional form of the standard modeling terms. To make progress in both cases\, we describe cells as continuum materials and use the equations of continuum elasticity to derive correlations between elastic deformation energy and shape parameters. Representing the cortex of a three-dimensional cell as a cylindrical shell\, we find that agreement with experimental data requires proper modeling of the 3D deformation\, i.e.\, the non-uniformity along the apical-basal axis caused primarily by anisotropic actin contractility at the basal side. The relationship between elastic energy and perimeter is then found to be non-harmonic\, even in the limit of vanishing actin content. Therefore\, we construct a 2D model modeling cytoplasm and cortex as different materials\, but uniform in the apical-basal direction. Here\, we can analytically compute the deformation shape and energy for arbitrary outlines of the deformed cell. We find that the non-harmonic relationship between energy and perimeter persists\, pointing towards a revised vertex model that retains the simplicity of the standard vertex model\, but is informed by and consistent with continuum mechanics.\nhttps://indico.ijs.si/event/4011/
URL:https://web-f1.ijs.si/event/sascha-hilgenfeldt-tissue-modeling-insight-from-continuum-mechanics/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260903T140000
DTEND;TZID=Europe/Ljubljana:20260903T150000
DTSTAMP:20261007T220445
CREATED:20260827T085059Z
LAST-MODIFIED:20260903T125029Z
UID:105749-1788444000-1788447600@web-f1.ijs.si
SUMMARY:Sipra Mohapatra\, "Molecular Mechanisms of Ion Transport in Polymer Electrolytes"
DESCRIPTION:https://indico.ijs.si/event/4030/
URL:https://web-f1.ijs.si/event/sipra-mohapatra-molecular-mechanisms-of-ion-transport-in-polymer-electrolytes/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260910T140000
DTEND;TZID=Europe/Ljubljana:20260910T150000
DTSTAMP:20261007T220445
CREATED:20260904T090748Z
LAST-MODIFIED:20260910T122317Z
UID:106433-1789048800-1789052400@web-f1.ijs.si
SUMMARY:Toshikaze Chiba\, "All Three Dimensions Matter for Epithelial Fluidization"
DESCRIPTION:https://indico.ijs.si/event/4051/
URL:https://web-f1.ijs.si/event/toshikaze-chiba-all-three-dimensions-matter-for-epithelial-fluidization/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260924T110000
DTEND;TZID=Europe/Ljubljana:20260924T120000
DTSTAMP:20261007T220445
CREATED:20260921T061109Z
LAST-MODIFIED:20260924T090922Z
UID:107898-1790247600-1790251200@web-f1.ijs.si
SUMMARY:Patrick Bolton: Displaced Signals from Long-lived Particles in Neutrinoless Double Beta Decay
DESCRIPTION:Neutrinoless double beta (0νββ) decay is one of the most powerful tools for probing physics beyond the Standard Model\, most notably the Majorana nature of neutrinos. Extensions of this framework involving light new physics mediators\, such as Majoron-like bosons\, have traditionally been searched for through their contribution to missing energy\, treating the new particle as invisible. In this talk\, I will present a complementary and largely unexplored scenario: one in which the Majoron-like particle is produced on-shell during 0νββ decay but is massive and long-lived enough to travel a macroscopic distance before decaying into visible final states. I will discuss the resulting displaced energy depositions from decays into photon pairs\, a photon plus a dark photon\, and electron-positron pairs\, and show how these signatures distort the expected visible energy spectra in characteristic\, distance-dependent ways. These displaced-decay topologies offer novel experimental handles at current and next-generation 0νββ decay experiments\, with the potential to improve sensitivity to Majoron couplings by more than two orders of magnitude relative to standard invisible Majoron searches. I will also comment on how the effective interactions responsible for this phenomenology can arise naturally in well-motivated UV completions that are otherwise inaccessible to conventional 0νββ decay searches\, underscoring the value of displaced-vertex signatures as a new probe of neutrino mass generation mechanisms.\nhttps://indico.ijs.si/event/4059/
URL:https://web-f1.ijs.si/event/patrick-bolton/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20260924T140000
DTEND;TZID=Europe/Ljubljana:20260924T150000
DTSTAMP:20261007T220445
CREATED:20260917T193524Z
LAST-MODIFIED:20260924T125051Z
UID:107597-1790258400-1790262000@web-f1.ijs.si
SUMMARY:Syed Shuja Hasan Zaidi\, "Wall Effects on the Phase-Separation Kinetics of Binary Fluid Mixtures: A Computer Simulation Study"
DESCRIPTION:https://indico.ijs.si/event/4061/
URL:https://web-f1.ijs.si/event/syed-shuja-hasan-zaidi-wall-effects-on-the-phase-separation-kinetics-of-binary-fluid-mixtures-a-computer-simulation-study/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261008T140000
DTEND;TZID=Europe/Ljubljana:20261008T150000
DTSTAMP:20261007T220445
CREATED:20261004T085033Z
LAST-MODIFIED:20261007T190906Z
UID:109089-1791468000-1791471600@web-f1.ijs.si
SUMMARY:Fabio Staniscia\, "Surfactant exchange kinetics at the air-water interface"
DESCRIPTION:Surfactants continuously exchange between bulk solution and interfaces. This process governs dynamic interfacial properties such as time-dependent surface tension\, foam stability\, and wetting. While equilibrium adsorption isotherms are routinely measured\, the underlying desorption kinetics remain difficult to access experimentally\, especially for fast-exchanging\, low-molecular-weight surfactants. Here we use molecular dynamics simulations to quantify the residence times of short-chain alcohols at the air-water interface. We find that residence times increase exponentially with alkyl chain length and with surface coverage. Furthermore\, we show that the residence time scales linearly with the adsorption coefficient\, linking equilibrium binding affinity to kinetic persistence.\nhttps://indico.ijs.si/event/4179/
URL:https://web-f1.ijs.si/event/fabio-staniscia-surfactant-exchange-kinetics-at-the-air-water-interface/
LOCATION:C/2-X – F1 čajnica (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261015T140000
DTEND;TZID=Europe/Ljubljana:20261015T150000
DTSTAMP:20261007T220445
CREATED:20260407T191334Z
LAST-MODIFIED:20261007T190906Z
UID:92776-1792072800-1792076400@web-f1.ijs.si
SUMMARY:Urška Andrenšek\, "Elasto-capilary vertex model of epithelia"
DESCRIPTION:https://indico.ijs.si/event/3732/
URL:https://web-f1.ijs.si/event/urska-andrensek-tba-2/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261022T141500
DTEND;TZID=Europe/Ljubljana:20261022T151500
DTSTAMP:20261007T220445
CREATED:20260917T193524Z
LAST-MODIFIED:20261007T190907Z
UID:107598-1792678500-1792682100@web-f1.ijs.si
SUMMARY:Urban Čoko (TBA)
DESCRIPTION:https://indico.ijs.si/event/4062/
URL:https://web-f1.ijs.si/event/urban-coko-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261029T110000
DTEND;TZID=Europe/Ljubljana:20261029T120000
DTSTAMP:20261007T220445
CREATED:20260921T061110Z
LAST-MODIFIED:20261007T193914Z
UID:107900-1793271600-1793275200@web-f1.ijs.si
SUMMARY:Pol Morell: Taming Scheme Dependence in Precision EFTs: Formalism and Applications
DESCRIPTION:Effective Field Theories (EFTs) provide a universal language for physics across different energy scales. In modern high-energy physics\, advancing these theories to Next-to-Leading-Logarithmic (NLL) precision is crucial\, but doing so introduces a highly non-trivial dependence on the choice of renormalization scheme. In this talk\, I will present the formalism to systematically map results across different schemes and operator bases. Beyond presenting such a connection\, I will demonstrate how this framework directly translates into several interesting phenomenological applications. In particular\, I will give a special focus to how it has been successfully used to obtain the full set of four-fermion NLL renormalization group equations in the Low-Energy Effective Field Theory (LEFT).  \nhttps://indico.ijs.si/event/4060/
URL:https://web-f1.ijs.si/event/tbd/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261029T140000
DTEND;TZID=Europe/Ljubljana:20261029T153000
DTSTAMP:20261007T220445
CREATED:20260731T000707Z
LAST-MODIFIED:20261007T190907Z
UID:103472-1793282400-1793287800@web-f1.ijs.si
SUMMARY:Seminars for Theoretical and Computational Biophysics
DESCRIPTION:https://indico.ijs.si/event/3161/
URL:https://web-f1.ijs.si/event/seminars-for-theoretical-and-computational-biophysics/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261105T110000
DTEND;TZID=Europe/Ljubljana:20261105T120000
DTSTAMP:20261007T220445
CREATED:20260722T113926Z
LAST-MODIFIED:20261007T193914Z
UID:102654-1793876400-1793880000@web-f1.ijs.si
SUMMARY:Sheng Fong: Seesaw Cosmology
DESCRIPTION:In this talk\, we will look at seesaw cosmology where we assume the energy density of the Universe is dominated by nonrelativistic scalar field after inflation\, and perturbative reheating occurs when the scalar field transfers its energy to the Standard Model sector through right-handed neutrinos (RHNs) responsible for light-neutrino masses via the type-I seesaw mechanism. When produced relativistically and sufficiently long lived\, the RHNs generate a characteristic sequence of inflaton\, relativistic-RHN\, nonrelativistic-RHN\, and Standard Model radiation domination. Then\, we investigate the implications of seesaw cosmology for dark-matter production. We further study the regime where the phase space of RHN is saturated and quantum statistics becomes relevant\, obtaining a new power law in the temperature evolution during the scalar field domination era.\nhttps://indico.ijs.si/event/4007/
URL:https://web-f1.ijs.si/event/sheng-fong/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261105T140000
DTEND;TZID=Europe/Ljubljana:20261105T153000
DTSTAMP:20261007T220445
CREATED:20260807T002144Z
LAST-MODIFIED:20261007T190907Z
UID:104072-1793887200-1793892600@web-f1.ijs.si
SUMMARY:Seminars for Theoretical and Computational Biophysics
DESCRIPTION:https://indico.ijs.si/event/3214/
URL:https://web-f1.ijs.si/event/seminars-for-theoretical-and-computational-biophysics-2/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261105T141500
DTEND;TZID=Europe/Ljubljana:20261105T151500
DTSTAMP:20261007T220445
CREATED:20260917T193525Z
LAST-MODIFIED:20261007T190907Z
UID:107599-1793888100-1793891700@web-f1.ijs.si
SUMMARY:Andrej Vilfan (TBA)
DESCRIPTION:https://indico.ijs.si/event/4063/
URL:https://web-f1.ijs.si/event/andrej-vilfan-tba/
LOCATION:Seminar room of physics (106) (IJS)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261112T110000
DTEND;TZID=Europe/Ljubljana:20261112T120000
DTSTAMP:20261007T220445
CREATED:20260923T142204Z
LAST-MODIFIED:20261007T193914Z
UID:108093-1794481200-1794484800@web-f1.ijs.si
SUMMARY:TBA
DESCRIPTION:https://indico.ijs.si/event/4070/
URL:https://web-f1.ijs.si/event/tba/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261112T140000
DTEND;TZID=Europe/Ljubljana:20261112T153000
DTSTAMP:20261007T220445
CREATED:20260814T003610Z
LAST-MODIFIED:20261007T190907Z
UID:104675-1794492000-1794497400@web-f1.ijs.si
SUMMARY:Seminars for Theoretical and Computational Biophysics
DESCRIPTION:https://indico.ijs.si/event/3215/
URL:https://web-f1.ijs.si/event/seminars-for-theoretical-and-computational-biophysics-3/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261119T110000
DTEND;TZID=Europe/Ljubljana:20261119T120000
DTSTAMP:20261007T220445
CREATED:20260921T061110Z
LAST-MODIFIED:20261007T193914Z
UID:107901-1795086000-1795089600@web-f1.ijs.si
SUMMARY:Subham Saha: TBA
DESCRIPTION:https://indico.ijs.si/event/4058/
URL:https://web-f1.ijs.si/event/subham-saha-tba/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20261119T140000
DTEND;TZID=Europe/Ljubljana:20261119T153000
DTSTAMP:20261007T220445
CREATED:20260821T011146Z
LAST-MODIFIED:20261007T190907Z
UID:105254-1795096800-1795102200@web-f1.ijs.si
SUMMARY:Seminars for Theoretical and Computational Biophysics
DESCRIPTION:https://indico.ijs.si/event/3216/
URL:https://web-f1.ijs.si/event/seminars-for-theoretical-and-computational-biophysics-4/
LOCATION:A/1-106 – Seminarska soba fizike (F5) (Jamova)
END:VEVENT
END:VCALENDAR