Island Cosmology
General Relativity and Quantum Cosmology
2009-04-30 v1
Abstract
If the observed dark energy is a cosmological constant, the canonical state of the universe is de Sitter spacetime. In such a spacetime, quantum fluctuations that violate the null energy condition will create islands of matter that, if large enough, may resemble our observable universe. Phenomenological approaches to calculating density fluctuations yield a scale invariant spectrum with suitable amplitude. With time, the island of matter that is our observable universe, re-enters the cosmological constant sea.
Cite
@article{arxiv.0904.4554,
title = {Island Cosmology},
author = {Sourish Dutta and Tanmay Vachaspati},
journal= {arXiv preprint arXiv:0904.4554},
year = {2009}
}
Comments
15 pages, 4 figures. Contribution to the book: "Beyond the Big Bang", ed. by Ruediger Vaas (Frontier Collection Series, Springer-Verlag, Heidelberg, 2009)