Interaction between Maxwell field and charged scalar field in de Sitter universe

Abstract

We study the theory of interaction between charged scalar field and Maxwell field in de Sitter background. Solving the equation of interacting fields we define the in-out fields as asymptotic free fields and construct the reduction formalism for scalar field. Then we derive the perturbation expansion of the scattering operator. The first order transition amplitudes corresponding to particle production from de Sitter vacuum and pair production in an external field are analysed. We show that all these effects are important only in strong gravitational fields and vanish in the flat limit.

24 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:0804.3718

References in corpus (4)

• The quantum theory of scalar fields on the de Sitter expanding universe
• Classical and quantum radiation from a moving charge in an expanding universe
• Production of scalar particles in electric field on de Sitter expanding Universe
• Coulomb scattering of the Dirac field on de Sitter expanding universe

Cited by in corpus (2)

• Decay of a Massive Particle in a Stiff Matter Dominated Universe
• Perturbative approach to the problem of particle production in electric field on de Sitter universe