Particle production from Q-balls
arXiv:hep-ph/0510078 · doi:10.1016/j.nuclphysb.2006.08.019
Abstract
Non topological solitons, Q-balls can arise in many particle theories with U(1) global symmetries. As was shown by Cohen et al. \cite{Qballscohen}, if the corresponding scalar field couples to massless fermions, large Q-balls are unstable and evaporate, producing a fermion flux proportional to the Q-ball's surface. In this paper we analyse Q-ball instabilities as a function of Q-ball size ans fermion mass. In particular, we construct an exact quantum-mechanical description of the evaporating Q-ball. This new construction provides an alternative method to compute Q-Ball's evaporation rates. We shall also find the new expression for the upper bound on evaporation as a function of the produced fermion mass and study the effects of Q ball's size on particle production.
References in corpus (2)
Cited by in corpus (10)
- Radial excitations of Q-balls, and their D-term
- Compact Q-balls in the complex signum-Gordon model
- Energy momentum tensor, stability, and the D-term of Q-balls
- Astrophysical constraints on dark-matter -balls in the presence of baryon-violating operators
- The energy-momentum tensor and D-term of Q-clouds
- Non-topological solitons and quasi-solitons
- Recrudescence of massive fermion production by oscillons
- The Physics of Q-balls
- Scattering of fermions on a one-dimensional Q-ball
- Similarities in the evaporation of saturated solitons and black holes