DSR as an explanation of cosmological structure
General Relativity and Quantum Cosmology
2015-05-13 v1
Abstract
Deformed special relativity (DSR) is one of the possible realizations of a varying speed of light (VSL). It deforms the usual quadratic dispersion relations so that the speed of light becomes energy dependent, with preferred frames avoided by postulating a non-linear representation of the Lorentz group. The theory may be used to induce a varying speed of sound capable of generating (near) scale-invariant density fluctuations, as discussed in a recent Letter. We identify the non-linear representation of the Lorentz group that leads to scale-invariance, finding a universal result. We also examine the higher order field theory that could be set up to represent it.
Cite
@article{arxiv.0807.1854,
title = {DSR as an explanation of cosmological structure},
author = {Joao Magueijo},
journal= {arXiv preprint arXiv:0807.1854},
year = {2015}
}