Decay of cosmological constant in self-consistent inflation

The symmetric vacuum state in gauge theories with spontaneous symmetry brea king is symmetric in both internal and space-time variables. We consider th is vacuum state as a Bose condensate of physical Higgs particles, defined o ver an asymmetric vacuum state, and identify the energy density of their se lf-interaction with the cosmological constant Lambda in the Einstein equati on. In this picture, spontaneous symmetry breaking proceeds as Lambda decay . Decoherence of coherent oscillations of a scalar field in the course of L ambda decay provides the effective mechanism for damping of coherent oscill ations, leading to the regime of slow evaporation of a Bose condensate. Thi s mechanism is responsible for self-consistent inflation without fine-tunin g of the potential parameters. The physical self-consistency in this model is provided by incorporating the origin of the cosmological constant in the dynamics of spontaneous breaking of particle symmetries.