Guillermo Lara - 13/07/2023 || CENTRA Seminars

Speaker: Guillermo Lara (Albert Einstein Institut, Potsdam)
Title: Dynamics in UV completions of k-essence
Abstract:
In recent years there has been an increased interest in modelling the nonlinear dynamics in theories beyond general relativity. Recent work by different groups has provided a new pathways towards performing numerical relativity simulations in such theories. In this talk, I summarize subset of these ideas and will illustrate them in the context of k-essence, a subset of Horndeski theory. In particular, I will present and example where different extensions (or UV completions) of the theory allow for continuing the evolution past the Cauchy breakdown of the original theory.
-------------------------------------------------------------------------------------------------------------------------------------------------------------
CREDITS
Recording: Alex Vañó-Viñuales
Editing (CENTRAnswers): Joan Bachs-Esteban, Giorgio Laverda, Matteo Piani
Webpage: centra.tecnico.ulisboa.pt
Twitter: / centra_ist
Instagram: / centra_ist