Unification of cosmological scalar fields
Abstract
We present a model where early inflation and late accelerating expansion of the Universe are driven by the real and imaginary parts of a single complex scalar field, which we identified as inflaton and phantom field, respectively. This inflaton-phantom unification is protected by an internal SO(1,1) symmetry, with the two cosmological scalars appearing as the degrees of freedom of a sole fundamental representation. The unification symmetry allows to build successful potentials. We observe that our theory provides a matter-phantom duality, which transforms scalar matter cosmological solutions into phantom solutions and vice versa. We also suggest that a complete unification of all scalar fields of cosmological interest is yet possible under a similar footing.
Cite
@article{arxiv.0707.1678,
title = {Unification of cosmological scalar fields},
author = {Abdel Pérez-Lorenzana and Merced Montesinos and Tonatiuh Matos},
journal= {arXiv preprint arXiv:0707.1678},
year = {2008}
}
Comments
Title slightly changed to match published version. Typos corrected and references added. Five pages, no figures