Fermion production in a magnetic field in a de Sitter Universe
arXiv:1602.08220 · doi:10.1103/PhysRevD.93.044070
Abstract
The process of fermion production in the field of a magnetic dipole on a de Sitter expanding universe is analyzed. The amplitude and probability for production of massive fermions are obtained using the exact solution of the Dirac equation written in the momentum-helicity basis. We found that the most probable transitions are those that generate the fermion pair perpendicular to the direction of the magnetic field. The behavior of the probability is graphically studied for large/small values of the expansion factor, and a detailed analysis of the probability in terms of the angle between the momenta vectors of the particle and antiparticle is performed. The phenomenon of fermion production is significant only at large expansion which corresponds to the conditions from the early Universe. When the expansion factor vanishes we recover the Minkowski limit where this process is forbidden by the simultaneous energy-momentum conservation.
arXiv comment28 pages, 20 figures
References in corpus (12)
- The IR stability of de Sitter: Loop corrections to scalar propagators
- Cosmological Magnetic Fields from Primordial Helicity
- Lecture notes on interacting quantum fields in de Sitter space
- Perturbative S-matrix for massive scalar fields in global de Sitter space
- Polarized Dirac fermions in de Sitter spacetime
- Creation of spin 1/2 particles by an electric field in de Sitter space
- The quantum theory of the free Maxwell field on the de Sitter expanding universe
- Fermion production in Coulomb field on de Sitter universe
- Approximative analytical solutions of the Dirac equation in Schwarzschild spacetime
- Production of scalar particles in electric field on de Sitter expanding Universe
- Creation of neutral fermions with anomalous magnetic moments from a vacuum by inhomogeneous magnetic field
- Fermion Production in Strong Magnetic Field and its Astrophysical Implications
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