#### Alladi Ramakrishnan Hall

#### Warped symmetries of the Kerr Black Hole

#### Ankit Aggarwal

##### ULB, Belgium

*We propose a set of diffeomorphism that act non-trivially near the horizon of the Kerr black hole. We follow the recent developments of Haco-Hawking-Perry-Strominger to quantify this phase space, with the most substantial difference being our choice of vectors fields. Our gravitational charges are organized into a Virasoro-Kac-Moody algebra with non-trivial central extensions. We interpret this algebra as arising from a warped conformal field theory. Using the data we can infer from this warped CFT description, we capture the thermodynamic properties of the Kerr black hole.*

The talk is based on arXiv 1909.03137. I will try to include pedagogical discussions regarding near horizon symmetries, charges, Warped CFTs, and the Cardy formula.

Done