Coexisting vacua and effective gravity
General Relativity and Quantum Cosmology
2009-11-11 v3 Statistical Mechanics
High Energy Physics - Phenomenology
Abstract
Our Universe may be a domain separated by physical phase boundaries from other domain-Universes with different vacuum energy density and matter content. The coexistence of different quantum vacua is perhaps regulated by the exchange of global fermionic charges or by fermion zero modes on the phase boundary. An example would be a static de-Sitter Universe embedded in an asymptotically flat spacetime.
Keywords
Cite
@article{arxiv.gr-qc/0503090,
title = {Coexisting vacua and effective gravity},
author = {F. R. Klinkhamer and G. E. Volovik},
journal= {arXiv preprint arXiv:gr-qc/0503090},
year = {2009}
}
Comments
10 pages with elsart.cls; v3: published version in Einstein issue of PLA