Joint Uppsala Meeting: Daniele Gregori, Vitor Cardoso, and Thomas Hertog (1/1)

Wednesday 8 Nov 2023, 11:00 → 17:10 Europe/Stockholm

D. Gregori (11am): New applications of supersymmetry and integrability to black holes’ ringdown

Abstract: Since gravitational waves observations became possible, they have received increasing attention also from theoretical physicists. Especially, some theoretical frameworks and mathematical methods, originally developed for particle physics, have found new surprising applications to black holes physics. In this talk, I will first give a brief review of some of these new formal theory applications, in the study of the final ringdown phase of black hole merging (black holes perturbation theory at linear order). Especially 4D N=2 supersymmetric gauge theory (in the Nekrasov-Shatashvili limit) has been revealed as new effective tool for the numerical computation and analytic characterisation of quasinormal modes. Through our study of the connection of these to 2D integrable models we have been able to clarify the mathematical reasons for such gauge theory application and also show the Thermodynamic Bethe Ansatz as a new exact computation method for quasinormal modes.
 

 

V. Cardoso (2pm):  New horizons in black hole physics

Abstract: One of the consequences of General Relativity is that vacuum black holes are remarkably simple macroscopic objects.
They are thus ideal laboratories to test the underlying theory, to probe their environment and to search for new degrees of freedom.
I will discuss recent progress in black hole spectroscopy and in our understanding of black hole environments using gravitational-wave observations.

 

T. Hertog (3.45pm): Towards a microscopic formulation of the no-boundary wave function