BIMSA > BIMSA General Relativity Seminar Kerr-de Sitter(-like) metrics from algebraically special asymptotic data in all dimensions
Kerr-de Sitter(-like) metrics from algebraically special asymptotic data in all dimensions
Organizers
Lars Andersson , Alejandro Torres-Orjuela , Xiaoran Zhang
Speaker
Carlos Peon Nieto
Time
Friday, September 26, 2025 4:30 PM - 5:30 PM
Venue
A3-2-301
Online
Zoom 787 662 9899 (BIMSA)
Abstract
The Kerr-de Sitter metric is likely to play a relevant role among positive-Λ vacuum spacetimes. To better understand what makes it special, we calculate the asymptotic data characterizing the metric near conformal infinity. This requires a review of tools in conformal geometry, such as the Fefferman-Graham expansion, and its relation with the asymptotic initial value problem in arbitrary dimensions. The asymptotic data obtained for Kerr–de Sitter admits a generalization to a broader explicit class of spacetimes that depends on a set of parameters, which we refer to as the Kerr-de Sitter-like class. We discuss various characterizations of this class focusing on the role that it plays among the class of algebraically special metrics.
Speaker Intro
I did my PhD thesis at the University of Salamanca, Spain, on asymptotic properties of spacetimes with a positive cosmological constant. After that I moved to Prague to do a postdoc at the theoretical physics institute of the Charles University. The last two years I have been in Universidad Politécnica de Madrid holding a tenure track.