Noncommutativity in Space and Primordial Magnetic Field
High Energy Physics - Phenomenology
2009-10-07 v3 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
In this paper we show that noncommutativity in spatial coordinates can generate magnetic field in the early Universe on a horizon scale. The strength of such a magnetic field depends on the number density of massive charged particles present at a given moment. This allows us to trace back the temperature dependence of the noncommutativity scale from the bounds on primordial magnetic field coming from nucleosynthesis.
Keywords
Cite
@article{arxiv.hep-ph/0012363,
title = {Noncommutativity in Space and Primordial Magnetic Field},
author = {Anupam Mazumdar and Mohammad M. Sheikh-Jabbari},
journal= {arXiv preprint arXiv:hep-ph/0012363},
year = {2009}
}
Comments
Revtex, 4 pages, v3: very minor changes, the version to appear in PRL