Decay of cosmological constant as Bose condensate evaporation

Details Decay of cosmological constant as Bose condensate evaporation Decay of cosmological constant as Bose condensate evaporation

2001-02-06

arxiv.org/abs/astro-ph/0102094v2

Mod.Phys.Lett. A15 (2000) 2305-2314

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1142/S0217732300002966

We consider the process of decay of symmetric vacuum state as evaporation of a Bose condensate of physical Higgs particles, defined over asymmetric vacuum state. Energy density of their selfinteraction is identified with cosmological constant $\Lambda$ in the Einstein equation. $\Lambda$ decay then provides dynamical realization of spontaneous symmetry breaking. The effective mechanism is found for damping of coherent oscillations of a scalar field, leading to slow evaporation regime as the effective mechanism for $\Lambda$ decay responsible for inflation without special fine-tuning of the microphysical parameters. This mechanism is able to incorporate reheating, generation of proper primordial fluctuations, and nonzero cosmological constant today.

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