skip to main content

SciTech ConnectSciTech Connect

Title: Fermion production in dipolar electric field on de Sitter expanding universe

The production of fermions in dipolar electric fields on de Sitter universe is studied. The amplitude and probability of pair production are computed using the exact solution of the Dirac equation in de Sitter spacetime. The form of the dipolar fields is established using the conformal invariance of the Maxwell equations. We obtain that the momentum conservation law is broken in the process of pair production in dipolar electric fields. Also we establish that there are nonvanishing probabilities for processes in which the helicity is conserved/nonconserved. The Minkowski limit is recovered when the expansion factor becomes zero.
Authors:
;  [1]
  1. Faculty of Physics, West University of Timisoara, V. Pârvan Ave.4 RO-300223 Timisoara (Romania)
Publication Date:
OSTI Identifier:
22494345
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; AMPLITUDES; CONFORMAL INVARIANCE; DE SITTER GROUP; DE SITTER SPACE; DIRAC EQUATION; ELECTRIC FIELDS; EXACT SOLUTIONS; FERMIONS; HELICITY; MAXWELL EQUATIONS; MINKOWSKI SPACE; PAIR PRODUCTION; PROBABILITY; UNIVERSE