Work

BKL oscillations in 2+1 space-time dimensions

Year: 2018

Type: preprint

Abstract: We investigate the question whether there are cosmological models in 2+1 space-time dimensions which exhibit dynamics similar to BKL oscillations, as the cosmological singularity is approached. Based on intuition, we conceive a toy model which displays such oscillatory dynamics. We show that in the phase space of this model, the cosmological singularity is represented by a separatrix curve and discuss the model's dynamics within the cosmological billiards picture. Finally, we offer a physical interpretation for a family of similar cosmological models in terms of the topological degrees of freedom of gravity in 2+1 dimensions.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.1811.05208

Authors: Fleig, Philipp, Belinski, Vladimir A.

Institutions: Max Planck Institute for Dynamics and Self-Organization, International Center for Relativistic Astrophysics, Institut des Hautes Études Scientifiques

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Institut des Hautes Études Scientifiques, Université Paris-Saclay

OpenAlex ID: W4289293215

Cites: 19

Cited by: 1

Related to: 10