Matter-antimatter hydrodynamics: computation of the annihilation rate.
Abstract
This paper is devoted to the computation of the particle-antiparticle annihilation rate at the boundary between two regions of space filled, respectively, by matter and antimatter. A general analysis of the problem is done, and a simple model useful for computing this important quantity in all situations encountered in cosmological studies is established. The annihilation rate is computed analytically in three specific situations: (1) in a matter-antimatter emulsion filling the universe in the radiative and plasma eras of the big bang; (2) in a situation where there is a strong magnetic field; and (3) at the boundary between a hot intergalactic medium and an antimedium.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 1978
- Bibcode:
- 1978A&A....67..199A
- Keywords:
-
- Annihilation Reactions;
- Antimatter;
- Big Bang Cosmology;
- Matter (Physics);
- Antiparticles;
- Intergalactic Media;
- Interplanetary Magnetic Fields;
- Magnetohydrodynamic Flow;
- Particles;
- Photons;
- Thermal Radiation;
- Astrophysics;
- Antimatter:Cosmology