Kinetics of spontaneous baryogenesis in non-stationary background
1 Novosibirsk State University, Novosibirsk, 630090, Russia
2 Department of Higher Mathematics, Dubna State University, 141980 Dubna, Russia
3 ITEP, Bol. Cheremushkinsaya ul., 25, 117259 Moscow, Russia
4 Dipartimento di Fisica e Scienze della Terra, Università degli Studi di Ferrara Polo Scientifico e Tecnologico - Edificio C, Via Saragat 1, 44122 Ferrara, Italy
Published online: 28 October 2016
Generation of the cosmological baryon asymmetry in frameworks of spontaneous baryogenesis is studied in detail. It is shown that the relation between baryonic chemical potential and the time derivative of the (pseudo)Goldstone field essentially depends upon the representation chosen for the fermionic fields with non-zero baryonic number (quarks). Kinetic equation is modified and numerically solved in equilibrium for the case of time dependent external background or finite integration time to be applicable to the case when energy conservation law is formally violated.
© The Authors, published by EDP Sciences, 2016
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