Joint Theory Seminar

Tuesday 14:00-15:00

SS2024

Schedule

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05.03.2024 UV Quasinormal modes of black holes in classical and alternative theories of gravity Angel Rincon In this talk, we study neutral massless/massive scalar field perturbations around different black hole backgrounds in several dimensions. We reduce the problem to its Schroedinger-like form, obtain the effective potential, and then calculate the corresponding quasinormal modes. For well-behaved black holes, we take advantage of the WKB method to obtain the spectrum. As usual, the quasinormal modes depend on the parameters of the black hole, so by varying them we can see how their variations affect the Quasi Normal frequencies.
12.03.2024 Rector's day
19.03.2024 UV Covariant charges and fluxes at null infinity Antoine Rignon-Bret In this talk, I will review the application of Noether theorem to general relativity and the covariant phase space techniques to construct Noether charges and fluxes on spacetime boundaries. In particular, I will detail the Wald-Zoupas procedure and focus on the physical interpretation. I will show that the implementation of the procedure implies that the algebra of local Noether currents is free of cocycle. Then, I will focus on non-trivial examples at null infinity. I will implement the Wald-Zoupas procedure for BMS and eBMS boundary conditions, and argue that it cannot be implemented successfully for generalized BMS fall-off conditions but for a symmetry group preserving different fall off conditions isomorphic to gBMS with a different algebra.
26.03.2024 Easter break
02.04.2024 Easter break
09.04.2024 TU title speaker abstract
16.04.2024 UV title speaker abstract
23.04.2024 TU title speaker abstract
30.04.2024 UV title Abhiram KIDAMBI abstract
07.05.2024 UV title Marcus Sperling abstract
14.05.2024 TU title Michele Del Zotto abstract
21.05.2024 UV Pentecost
28.05.2024 UV title speaker abstract
04.06.2024 TU title speaker abstract
11.06.2024 UV title speaker abstract
18.06.2024 UV title speaker abstract
15.06.2024 UV title speaker abstract

About

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The Joint Theory Seminar is held alternately at the University of Vienna and the Technische Universität Wien, either on site or online via Zoom.

The Topic of the seminar is recent theoretical research in the areas of mathematical physics, high energy physics, physics of fundamental interactions and particle physics.

The target audience for the talks are PhDs, postdocs and faculty members.

To stay informed please subscribe to our mailing list.

How to participate


Attending

Anyone can attend. To receive the link to the Zoom meeting please contact one of the organizers.

Giving a talk

If you want to give a talk contact Adrien Fiorucci or Tung Tran.

Contact

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Daniel Grumiller
Associate Prof. Dr.techn.

Black holes and holography

Technische Universität Wien

Stefan Fredenhagen
Univ.-Prof. Dr.

Mathematical physics

University of Vienna

Adrien Fiorucci
Postdoctoral researcher

Black holes and holography

Technische Universität Wien

Tung Tran
Postdoctoral researcher

Mathematical physics

University of Vienna