TY  - JOUR
A1  - Ecker, Christian
A1  - Schee, Wilke van der
A1  - Mateos, David
A1  - Casalderrey-Solana, Jorge
T1  - Holographic evolution with dynamical boundary gravity
T2  - Journal of high energy physics
N2  - Holography has provided valuable insights into the time evolution of strongly coupled gauge theories in a fixed spacetime. However, this framework is insufficient if this spacetime is dynamical. We present a scheme to evolve a four-dimensional, strongly interacting gauge theory coupled to four-dimensional dynamical gravity in the semiclassical regime. As in previous work, we use holography to evolve the quantum gauge theory stress tensor, whereas the four-dimensional metric evolves according to Einstein’s equations coupled to the expectation value of the stress tensor. The novelty of our approach is that both the boundary and the bulk spacetimes are constructed dynamically, one time step at a time. We focus on Friedmann-Lemaître-Robertson-Walker geometries and evolve far-from-equilibrium initial states that lead to asymptotically expanding, flat or collapsing Universes.
Y1  - 2022
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/84389
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-843894
SN  - 1029-8479
VL  - 2022
IS  - article number 137
SP  - 1
EP  - 17
PB  - Springer
CY  - Berlin ; Heidelberg
ER  -