Unification of cosmological scalar fields
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
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.
Title slightly changed to match published version. Typos corrected and references added. Five pages, no figures
Title slightly changed to match published version. Typos corrected and references added. Five pages, no figures