Particle-antiparticle perturbation mode horizon crossing: baryogenesis, leptogenesis and magnetogenesis

TL;DR

This paper proposes a mechanism during reheating where quantum oscillations of particle-antiparticle pairs lead to baryogenesis, leptogenesis, and magnetogenesis, aligning with observational constraints.

Contribution

It introduces a novel particle-antiparticle perturbation mode crossing horizon, linking early universe processes to matter asymmetry and magnetic field generation.

Findings

Baryon and lepton asymmetries are consistent with observational data.

Primordial magnetic field bounds align with current measurements.

Dark matter-antimatter asymmetry is also discussed.

Abstract

During the reheating epoch, gravitationally produced massive particle-antiparticle pairs undergo quantum oscillation. Perturbations in their relative densities cross out the horizon, leading to an asymmetry of particles and antiparticles inside the horizon. Massive particles decay into baryons and leptons, thereby explaining baryogenesis and leptogenesis, whose charged components must generate a nontrivial electric current, thereby producing a primordial magnetic field (magnetogenesis). As a result, the baryon (lepton) number-to-entropy ratio and the primordial magnetic field bounds are consistent with observational data. We also discuss the asymmetry of dark matter and anti-dark matter.