Fermion production in dipolar electric field on de Sitter expanding universe

Journal Article · Mon Dec 07 00:00:00 EST 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4937241· OSTI ID:22494345

Băloi, Mihaela-Andreea; Crucean, Cosmin ^[1]

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1. Faculty of Physics, West University of Timisoara, V. Pârvan Ave.4 RO-300223 Timisoara (Romania)

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.

• OSTI ID: 22494345
• Journal Information: AIP Conference Proceedings, Vol. 1694, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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