Affordable Access

Universal scattering laws for bouncing cosmology

Authors
  • Le Floch, Bruno
  • LeFloch, Philippe G.
  • Veneziano, Gabriele
Publication Date
Jul 08, 2020
Source
HAL-Descartes
Keywords
Language
English
License
Unknown
External links

Abstract

Bouncing cosmologies can arise from various gravity theories. We model them through a singularity scattering map, as we call it, relating large scale geometries before and after the bounce. By classifying all suitably local maps we uncover universal laws (scaling of Kasner exponents, canonical transformation of matter). We study the singularity scattering map for Bianchi I bounces in string theory, loop quantum cosmology and modified matter models: our classification then determines how general spatial inhomogeneities and anisotropies (without BKL oscillations) are transmitted through bounces.

Report this publication

Statistics

Seen <100 times