On dissipational processes in the cosmological GUT era |
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| Authors: | Micha? Ostrowski |
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| Institution: | 1. Astronomical Observatory, Jagiellonian University, Krakow, Poland
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| Abstract: | A discussion of equilibrium conditions in the cosmological GUT (≡ Grand Unified Theories) era leads to the conclusion that viscous approximation is not adequate to describe kinetic dissipative processes acting at that epoch. The attempt of an alternative decription is presented within the assumed simple model. The maximal possible gain of entropy is a slowly increasing function of the initial anisotropy parameter. The mechanism generating bulk viscosity in the gas of interacting massless particles is also presented. There is only a small dissipative effect connected with this phenomenon. |
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