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Title: Quantum radiation from an inertial scalar charge evolving in the de Sitter universe: Weak-field limit

We investigate the energy radiated by an inertial scalar charge evolving in the expanding Poincaré patch of de Sitter spacetime, in the framework of scalar QED perturbation theory. We approximate the transition amplitude in the small expansion parameter limit and show that the leading contribution to the radiated energy has the form of the energy radiated by an accelerated particle in Minkowski space.
Authors:
 [1]
  1. Faculty of Physics, West University of Timişoara V. Pârvan Ave. 4, RO-300223 Timişoara (Romania)
Publication Date:
OSTI Identifier:
22494347
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1694; Journal Issue: 1; Conference: TIM14 physics conference on physics without frontiers, Timisoara (Romania), 20-22 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; APPROXIMATIONS; DE SITTER GROUP; DE SITTER SPACE; MINKOWSKI SPACE; PARTICLES; PERTURBATION THEORY; QUANTUM ELECTRODYNAMICS; SCALARS; TRANSITION AMPLITUDES; UNIVERSE