Abstract
In the simple model of massive vector field in a flat spacetime, we derive the kinetic equation of non-Markovian type describing the vacuum pair creation under action of external fields of different nature. We use for this aim the nonperturbative methods of kinetic theory in combination with a new element when the transition of the instantaneous quasiparticle representation is realized within the oscillator (holomorphic) representation. We study in detail the process of vacuum creation of vector bosons generated by a time-dependent boson mass in accordance with the framework of a conformal-invariant scalar-tensor gravitational theory and its cosmological application. It is indicated that the choice of the equation of state allows one to obtain a number density of vector bosons that is sufficient to explain the observed number density of photons in the cosmic microwave background radiation.
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From Yadernaya Fizika, Vol. 68, No. 6, 2005, pp. 1087–1094.
Original English Text Copyright © 2005 by Blaschke, Prozorkevich, Reichel, Smolyansky.
This article was submitted by the authors in English.
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Blaschke, D.B., Prozorkevich, A.V., Reichel, A.V. et al. Kinetic description of vacuum creation of massive vector bosons. Phys. Atom. Nuclei 68, 1046–1053 (2005). https://doi.org/10.1134/1.1954833
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DOI: https://doi.org/10.1134/1.1954833