Gravity waves from cosmic bubble collisions
High Energy Physics - Theory
2015-06-11 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
Our local Hubble volume might be contained within a bubble that nucleated in a false vacuum with only two large spatial dimensions. We study bubble collisions in this scenario and find that they generate gravity waves, which are made possible in this context by the reduced symmetry of the global geometry. These gravity waves would produce B-mode polarization in the cosmic microwave background, which could in principle dominate over the inflationary background.
Cite
@article{arxiv.1210.4165,
title = {Gravity waves from cosmic bubble collisions},
author = {Michael P. Salem and Prashant Saraswat and Edgar Shaghoulian},
journal= {arXiv preprint arXiv:1210.4165},
year = {2015}
}
Comments
26 pages plus references, 5 figures; v2: references updated, agrees with published version