Bulg. J. Phys. vol.44 no.1 (2017), pp. 015-030

Quintessential Inflation, Unified Dark Energy and Dark Matter, and Higgs Mechanism

E. Guendelman1, E. Nissimov2, S. Pacheva2
1Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
2Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
Abstract. We describe a new type of gravity-matter models where gravity couples in a non-conventional way to two distinct scalar fields providing a unified Lagrangian action principle description of: (a) the evolution of both "early" and "late" Universe – by the "inflaton" scalar field; (b) dark energy and dark matter as a unified manifestation of a single material entity – the "darkon" scalar field. The essential non-standard feature of our models is employing the formalism of non-Riemannian space-time volume forms – alternative generally covariant integration measure densities (volume elements) defined in terms of auxiliary antisymmetric tensor gauge fields. Although being (almost) pure-gauge degrees of freedom, the non-Riemannian space-time volume forms trigger a series of important features unavailable in ordinary gravity-matter models. When including in addition interactions with the electro-weak model bosonic sector % of the electro-weak model we obtain a gravity-assisted generation of electro-weak spontaneous gauge symmetry breaking in the post-inflationary "late" Universe, while the Higgs-like scalar remains massless in the "early" Universe.

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