|
Calendar of Physics Talks Vienna
| Uniqueness of supersymmetric AdS$_5$ black holes |
| Speaker: | Sergei Ovchinnikov (Edinburgh) |
| Abstract: | The classification of anti de Sitter black holes is an open problem of central importance in holography. In this talk, I will present new advances in classification of supersymmetric solutions to five-dimensional minimal gauged supergravity. In particular, we prove a black hole uniqueness theorem within a âCalabi-typeâ subclass of solutions with biaxial symmetry. This subclass includes all currently known black hole solutions within this theory. |
| Date: | Tue, 22.11.2022 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | ZOOM link: https://tuwien.zoom.us/j/96505893692?pwd=TWNKUThEOW83anl1RDl5UDRaZVdNUT09 |
| Contact: | D. Grumiller, S. Fredenhagen, E. Battista, R. Ruzziconi |
| Phenomenology with Massive Neutrinos in 2022 |
| Speaker: | Maria Gonzalez-Garcia (C.N. Yang Inst. for Theoretical Physics at Stony Brook Univ. and ICREA at the Univ. of Barcelona) |
| Abstract: | Neutrino oscillation experiments have provided us with our only direct proof of physics beyond the standard model (BSM) in the form
of lepton flavour violation in neutrino propagation due to neutrino masses and flavour mixing in the leptonic sector. In this talk I will first review the present status of neutrino masses and mixing in the minimal framework with three massive neutrinos. I will then discuss other new physics effects that can also probed with neutrino oscillations such as non standard neutrino interactions,
models with new ultralight mediators or additional sterile neutrino states. I will also comment on my personal take on the implications of these results for our clarification of the underlying BSM dynamics. |
| Date: | Tue, 22.11.2022 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultaet fuer Physik, Erwin Schroedinger-HS, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, M. Procura, T. Corbett |
| LHCb SciFi Tracker - Current Status and Upgrade Plans |
| Speaker: | Carina Trippl (EPFL - Ecole Polytechnique Federale Lausanne) |
| Abstract: | A new Scintillating Fibre (SciFi) Tracker has been installed as part of the last LHCb Upgrade (2019-2022) to increase the tracking efficiency and to implement a trigger-less 40 MHz electronic readout system. The tracker is made of staggered scintillating fibres and read out by Silicon Photomultipliers (SiPMs).
At the end of the Run 3 data taking period in 2025, an integrated luminosity of L=40/fb will be reached, which is close to the SciFi Trackers design luminosity of L=50/fb.
Thus the fibre modules most affected by the radiation will be replaced during the next long shutdown (2026 - 2029). This also allows to install microlens-enhanced SiPMs to mitigate the radiation-induced ageing effects by improving the Photon Detection Efficiency (PDE).
A further ... [full abstract available here: https://indico.cern.ch/event/1220172/] |
| Date: | Wed, 23.11.2022 |
| Time: | 17:00 |
| Duration: | 60 min |
| Location: | SMI Seminarraum, Kegelgasse 27, 3. Stock |
| Contact: | Eberhard Widmann, Martin Simon |
| Non-smooth Spacetimes, Quantum Field Theory, and Microlocal Analysis |
| Speaker: | Yafet Erasmo Sanchez Sanchez (Hamburg) |
| Abstract: | In this talk, I will present the quantisation of the linear scalar field when the background spacetime metric is not smooth.
The analysis of quantum fields in spacetimes, where the metric is not smooth, has two primary motivations.
First, there are several models of physical phenomena that require spacetime metrics with finite regularity.
Second, the analysis of the well-posedness of Einsteinâs equations, viewed as a system of hyperbolic PDEâs requires spaces with finite regularity.
I will focus mainly on the microlocal aspects of the causal propagator and the two-point function of ground states, and the techniques used to overcome the lack of smoothness.
The talk will be based on arXiv:1910.13789 and arXiv:2207.01429 |
| Date: | Thu, 24.11.2022 |
| Time: | 15:15 |
| Duration: | 60 min |
| Location: | ZOOM https://univienna.zoom.us/j/6540036841?pwd=SytyVkZJZzNyRG9lMm13ejlHeHRRUT09 |
| Contact: | P. Chrusciel, D. Fajman |
| How satellites can help to solve the greatest questions of modern physics? |
| Speaker: | Hansjoerg Dittus, Universitaet Bremen (DKPI - TU Wien) |
| Abstract: | The presentation will report on so far unexplained observations of deviations of spacecraft trajectories and discuss the possibilities for future missions and space experiments in gravitational and quantum physics. |
| Date: | Thu, 24.11.2022 |
| Time: | 18:30 |
| Duration: | 60 min |
| Location: | TUtheSky Meeting Hall, Getreidemark 9, 1060 Vienna, https://indico.cern.ch/event/1207521/registrations/87896/ |
| Contact: | Hartmut Abele |
|