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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 |
| Testing the limits of H-implantation for Si power MOSFETs: Advantages and Challenges |
| Speaker: | Andrea Fugger (TU Wien, IAP, FB Angewandte Grenzflächenphysik) |
| Abstract: | Semiconductor manufacturing is constantly searching for methods to achieve smaller process windows and improved yield. Proton implantation in addition to the standard ion implants is a promising method to reach that goal for Si-power MOSFETs. While there is a lot of literature about Hydrogen in Si base materials [1,2] or its use for lifetime adjustments and formation of field stop regions [3], its use as a dopant in the active region of power Devices is largely unexplored.
In this talk I will provide an overview of the advantages of H-implantation and two examples of challenges during industrial use. The main example concerns the technical implementation of the method in a production line. Key points here are the implant depth profile, the allowed temperature budget and the materials in the way of the beam, as well as potentially resulting radiation [4]. The second example introduces th |
| Date: | Tue, 20.01.2026 |
| Time: | 16:00 |
| Location: | TU Wien, Institut für Angewandte Physik, E134 1040 Wien, Wiedner Hauptstraße 8-10 Yellow Tower „B“, 5th floor, SEM.R. DB gelb 05 B |
| Contact: | Univ.Prof. Dr. Markus Valtiner |
| 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 |
| Generation of multipartite photonic entanglement using a trapped-ion quantum processing node |
| Speaker: | Ida Mishra (TU Wien Atominstitut) |
| Abstract: | The ability to establish entanglement between the nodes of future quantum networks is essential for enabling a wide range of new applications in science and technology. A promising approach involves the use of a powerful central node capable of deterministically preparing arbitrary multipartite entangled states of its matter-based qubits and efficiently distributing these states to surrounding end nodes via flying photons. This central node, referred to as a``factory node", serves as a hub for the production and distribution of multipartite entanglement.
In this talk, I will present our recent paper where we demonstrate key functionalities of a factory node using a cavity-integrated trapped-ion quantum processor. Specifically, we program the system to generate genuinely multipartite entangled Greenberger-Horne-Zeilinger (GHZ) states of three path-switchable photons and verify them usin |
| Date: | Wed, 21.01.2026 |
| Time: | 16:15 |
| Duration: | 45 min |
| Location: | Helmut Rauch Hörsaal ATI |
| Contact: | Maximilian Prüfer |
| 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 |
| Photonic quantum technologies: from integrated quantum devices to designing large complex system |
| Speaker: | Christine Silberhorn (Paderborn ) |
| Abstract: | Classical optical systems exploiting the coherence of interfering waves underpin many modern
photonic technologies. Integrated optics provides miniaturization and high functionality,
enabling the realization of compact and scalable devices. At the quantum level, the discrete
nature of light — manifested in photons and entangled states — gives rise to genuine quantum
effects that form the foundation of emerging quantum technologies capable of surpassing
classical limits, such as in quantum communication, computation and metrology. Current
efforts in photonic quantum science target the implementation of practical devices and scalable
systems, where the realization of quantum devices for real-word deployment and controlled
quantum network structures is key for many applications.
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| Date: | Fri, 23.01.2026 |
| Time: | 10:00 |
| Duration: | 45 min |
| Location: | Helmut Rauch Hörsaal ATI |
| Contact: | Eliza Agudelo |
| 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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