Effects of temperature on the creation of particles in a hot Friedmann universe
Abstract
The creation of particles (bosons and fermions) in a hot Friedmann universe from an initial state described by a thermal density matrix is considered in the case when the effective mass of the particles depends on the temperature. It is shown that for scalar particles allowance for the temperature effects leads to a very strong suppression of the creation process. For spinor particles, allowance for the temperature effects leads to a strong suppression of the process of creation from an initial vacuum state. However if the creation of the spinor particles takes place from a state described by a thermal density matrix, then the temperature effect on the particle creation process is relatively weak.
- Authors:
- Publication Date:
- Research Org.:
- Odessa State Univ. (USSR)
- OSTI Identifier:
- 5275171
- Resource Type:
- Journal Article
- Journal Name:
- Astrophysics (Engl. Transl.); (United States)
- Additional Journal Information:
- Journal Volume: 26:2; Other Information: Translated from Astrofizika; 26: No.2, 377-385(Mar-Apr 1987)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOSONS; PARTICLE PRODUCTION; FERMIONS; UNIVERSE; COSMOLOGICAL MODELS; ORIGIN; TEMPERATURE EFFECTS; COUPLING CONSTANTS; DENSITY MATRIX; INHIBITION; QUANTUM FIELD THEORY; SCALAR FIELDS; SPINOR FIELDS; TEMPERATURE DEPENDENCE; VACUUM STATES; WAVE FUNCTIONS; FIELD THEORIES; FUNCTIONS; MATHEMATICAL MODELS; MATRICES; 640106* - Astrophysics & Cosmology- Cosmology; 645400 - High Energy Physics- Field Theory
Citation Formats
Guenther, U, and Zhuk, A I. Effects of temperature on the creation of particles in a hot Friedmann universe. United States: N. p., 1987.
Web.
Guenther, U, & Zhuk, A I. Effects of temperature on the creation of particles in a hot Friedmann universe. United States.
Guenther, U, and Zhuk, A I. 1987.
"Effects of temperature on the creation of particles in a hot Friedmann universe". United States.
@article{osti_5275171,
title = {Effects of temperature on the creation of particles in a hot Friedmann universe},
author = {Guenther, U and Zhuk, A I},
abstractNote = {The creation of particles (bosons and fermions) in a hot Friedmann universe from an initial state described by a thermal density matrix is considered in the case when the effective mass of the particles depends on the temperature. It is shown that for scalar particles allowance for the temperature effects leads to a very strong suppression of the creation process. For spinor particles, allowance for the temperature effects leads to a strong suppression of the process of creation from an initial vacuum state. However if the creation of the spinor particles takes place from a state described by a thermal density matrix, then the temperature effect on the particle creation process is relatively weak.},
doi = {},
url = {https://www.osti.gov/biblio/5275171},
journal = {Astrophysics (Engl. Transl.); (United States)},
number = ,
volume = 26:2,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 1987},
month = {Tue Sep 01 00:00:00 EDT 1987}
}
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