First order transition amplitudes of the de Sitter QED and dynamical particle creation

Details First order transition amplitudes of the de Sitter QED and dynamical particle creation First order transition amplitudes of the de Sitter QED and dynamical particle creation

2010-07-27

arxiv.org/abs/1007.4647v3

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages no figures

Scientific paper

It is shown that on the de Sitter spacetime global quantum modes can be prepared by a global apparatus which can measure QED transitions as in special relativity. The difference is that the gravity eliminates the mass-shell constraints giving rise to QED transitions with non-vanishing amplitudes even in the first order of perturbations. These amplitudes vanish in the flat limit where the mass-shell constraints are restored. Of a special interest could be the first order amplitudes of a new effect of dynamical particle creation due to the expansion of the de Sitter universe.

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