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Calendar of Physics Talks Vienna
| R-symmetry operators from non-BPS branes |
| Speaker: | Francesco Mignosa, (University of Oviedo) |
| Abstract: | Symmetries play a fundamental role in the study of Quantum Field Theories (QFTs). They provide selection rules, constrain the dynamics of QFTs, and, through anomalies, offer a method to test IR or UV dualities among different QFTs. It is then crucial to understand the symmetries that a theory can enjoy. This recently motivated the study of generalized global symmetries and the description of discrete symmetries through the symmetry Topological Field Theory (symTFT), which separates the symmetry structure from the field theory dynamics. Holography represents a natural laboratory to deal with these aspects: string theory reduced on the internal space of the holographic background realizes the symTFT, and BPS branes describe the charged and topological operators of the dual theory. However, the characterization of continuous symmetry operators in holography is still unclear.
In this talk, |
| Date: | Tue, 20.01.2026 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Erwin-Schroedinger-HS, Boltzmanngasse 5, 1090 Wien, 5.Stock |
| Contact: | S. Fredenhagen, M. Sperling |
| Particle Production at a Cosmological First-Order Phase Transition |
| Speaker: | Paulina Schlachter (University of Vienna) |
| Abstract: | In the first few fractions of a second after the Big Bang, the universe rapidly went through a series of different phases as it cooled down, each phase correspondingto the breaking of a certain symmetry. Under certain conditions, this symmetry breaking happens through a cosmological first-order phase transition which would happen through the nucleation and expansion of bubbles of the ”broken” phase. Such a supercooled phase transition would dilute away all pre-existing dark matter in the universe, necessitating a mechanism to create dark matter during or after the phase transition. The mechanism proposed is as follows:
Since translational symmetry is broken across the boundary between the two phases, conservation of momentum is no longer given and exotic processes that would normally be forbidden become possible. One such process would be the decay of a light scalar, which is taken to b |
| Date: | Tue, 20.01.2026 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Erwin-Schroedinger-HS, Boltzmanngasse 5, 1090 Wien, 5.Stock |
| Contact: | A. Hoang, M. Procura, J. Pradler. H. Neufeld |
| The World in One Line - Schroedinger's Equation Turns 100 |
| Speaker: | Markus Aspelmeyer, Markus Arndt, Klaus Fredenhagen, Juerg Froehlich, Leticia Gonzalez, Eberhard Gross, Susana Huelga, Barbara Kraus, Jan Philip Solovej, Juergen Renn, Marianna Rossi, Reinhard Werner (U of Vienna, U of Hamburg, ETH Zurich, Hebrew U Jerusalem, U of Ulm, U of Copenhagen, TU Munich, MPI-GEA Jana, MPSD Hamburg, Leibniz U Hannover) |
| Abstract: | In 1926, Erwin Schroedinger published a series of seminal papers introducing the Schroedinger equation, the cornerstone of quantum mechanics. This partial differential equation governs the time evolution and stationary states of quantum systems, linking atomic and molecular structure to the behavior of condensed matter.
This two-day symposium marks the equationâs centenary and brings together leading international experts for twelve lectures spanning historical perspectives, foundational and mathematical aspects, and contemporary applications. The event is designed to engage both specialists and non-specialists, highlighting how a single equation reshaped our understanding of nature and continues to drive innovation a century later. https://www.esi.ac.at/events/e596/ |
| Date: | Thu, 22.01.2026 |
| Time: | 09:00 |
| Duration: | 660 min |
| Location: | Erwin Schrödinger Institute, Boltzmann Lecture Hall, Boltzmanngasse 9, 1090 Vienna |
| Contact: | Erwin Schroedinger Institute, secr@esi.ac.at |
| The World in One Line - Schroedinger's Equation Turns 100 |
| Speaker: | Markus Aspelmeyer, Markus Arndt, Klaus Fredenhagen, Jueg Froehlich, Leticia Gonzalez, Eberhard Gross, Susana Huelga, Barbara Kraus, Jan Philip Solovej, Juergen Renn, Marianna Rossi, Reinhard Werner (U of Vienna, U of Hamburg, ETH Zurich, Hebrew U Jerusalem, U of Ulm, TU Munich, U of Copenhagen, MPI GEA Jena, MPSD Hamburg, Leibniz U Hannover) |
| Abstract: | In 1926, Erwin Schroedinger published a series of seminal papers introducing the Schroedinger equation, the cornerstone of quantum mechanics. This partial differential equation governs the time evolution and stationary states of quantum systems, linking atomic and molecular structure to the behavior of condensed matter.
This two-day symposium marks the equationâs centenary and brings together leading international experts for twelve lectures spanning historical perspectives, foundational and mathematical aspects, and contemporary applications. The event is designed to engage both specialists and non-specialists, highlighting how a single equation reshaped our understanding of nature and continues to drive innovation a century later. https://www.esi.ac.at/events/e596/ |
| Date: | Fri, 23.01.2026 |
| Time: | 09:30 |
| Duration: | 510 min |
| Location: | Erwin Schroedinger Institute, Boltzmann Lecture Hall, Boltzmanngasse 9, 1090 Vienna |
| Contact: | Erwin Schroedinger Institute, secr@esi.ac.at |
| Comparing next-generation detector configurations for high-redshift gravitational wave sources with neural posterior estimation |
| Speaker: | Dr Filippo Santoliquido (GSSI, INFN) |
| Abstract: | The coming decade will be crucial for determining the final design and configuration of a global network of next-generation (XG) gravitational-wave (GW) detectors, including the Einstein Telescope (ET) and Cosmic Explorer (CE). In this study and for the first time, we assess the performance of various network configurations using neural posterior estimation (NPE) implemented in Dingo-IS–a method based on normalizing flows and importance sampling that enables fast and accurate inference. We focus on a specific science case involving short-duration, massive and high-redshift binary black hole (BBH) mergers with detector-frame chirp masses larger than 100 solar masses. These systems encompass early-Universe stellar and primordial black holes, as well as intermediate-mass black-hole binaries, for which XG observatories are expected to deliver major discoveries. Validation against standard Ba |
| Date: | Fri, 23.01.2026 |
| Time: | 10:00 |
| Duration: | 60 min |
| Location: | Besprechungsraum 3A.1, PSK, Georg-Coch-Platz 2, 1010 Wien |
| Contact: | Ulyana Dupletsa (MBI, Vienna) |
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