Creation of scalar and Dirac particles in the presence of a time varying electric field in an anisotropic Bianchi type I universe

Abstract

In this article we compute the density of scalar and Dirac particles created by a cosmological anisotropic Bianchi type I universe in the presence of a time varying electric field. We show that the particle distribution becomes thermal when one neglects the electric interaction. † Alexander von Humboldt Fellow

Schwinger pair production indS2andAdS2

“…[15]. Also pair production was considered in an anisotropically expanding universe [16,17]. Though the instantons in dS 2 and AdS 2 have been known independently, the relation between the pair-production rates has not been examined before.…”

Schwinger Effect in a Robertson-Walker Space-Time

“…In order to study the phenomenon of particle creation in gravitational and electromagnetic fields we have at our disposal several techniques such as the adiabatic approach [11][12][13], the Hamiltonian diagonalization method [14][15][16][17][18], the Green function approach [19,20], the Feynman path integral technique [21,22], the semiclassical WKB approximation [23][24][25][26][27] as well as the method based on vacuum to vacuum transition amplitude and Schwinger-like effective action [28,29] and the "in" and "out" states formalism [30][31][32][33][34] that we shall use in this paper.…”

Pair Production in a Strong Rotating Magnetic Field: The Effect of a Weak Background Gravitational Field

“…[13][14][15] In the same framework, the possibility of particle creation in the presence of gravitational and electromagnetic fields has also been investigated. 16,17 As we will explain in the following section, we start by using the same formalism but then we change our point of view. In fact, in our model the main responsible of the pair creation is still the magnetic field and the fact that it varies with time.…”