Influence of a cosmic string on the rate of pairs produced by the Coulomb potential

Abstract

We study particle creation phenomenon by the Coulomb potential of an external electric field in the presence of a gravitational field of a static cosmic string. For that, the generalized Klein-Gordon and Dirac equations are solved, and by using the Bogoliubov transformation we calculate the probability and the number density of created particles. It is shown that the presence of the cosmic string enhances the particle production. For the grand unified theory (GUT) cosmic string, the production of spinless particles is possible if the Coulomb potential nucleus charge $Z\ge 206$, and for spin-1/2 particles if $Z\ge 275$.

arXiv comment26 pages, 5 figures, published version

References in corpus (19)

• Origin and Propagation of Extremely High Energy Cosmic Rays
• Gravitational wave bursts from cosmic strings
• Planck 2013 results. XXV. Searches for cosmic strings and other topological defects
• Has NANOGrav found first evidence for cosmic strings?
• Hydrogen atom in the gravitational fields of topological defects
• Dirac Hamiltonian with superstrong Coulomb field
• Ability of LISA to detect a gravitational-wave background of cosmological origin: the cosmic string case
• Probing QED Vacuum with Heavy Ions
• Self-adjoint Extensions for Confined Electrons:from a Particle in a Spherical Cavity to the Hydrogen Atom in a Sphere and on a Cone
• Probing cosmic string spacetime through parameter estimation
• Quantum scalar field in FRW Universe with constant electromagnetic background
• Scalar bosons with Coulomb potentials in a cosmic string background: Scattering and bound states
• From spinning to non-spinning cosmic string spacetimes
• Electron-positron vacuum instability in strong electric fields. Relativistic semiclassical approach
• Creation of Dirac Particles in the Presence of a Constant Electric Field in an Anisotropic Bianchi I Universe
• Effect of electromagnetic fields on the creation of scalar particles in a flat Robertson-Walker space-time
• Generalized Schwinger effect and particle production in an expanding universe
• Particle Creation in some LRS Bianchi I models
• Effect of the electric field on the creation of fermions in de-Sitter space-time

Cited by in corpus (3)

• Quantum Particle Creation by Cosmic Strings in de Sitter Spacetime
• Effects of the Lorentz symmetry violation on relativistic neutral scalar bosons: Scattering and bound states
• Effect of a critical magnetic field on the control of scalar neutral boson pair production in the context of Lorentz-symmetry violation