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Title: Elementary particles in the early Universe

Abstract

The high-temperature limit of the Standard Model generated by the contractions of gauge groups is discussed. Contraction parameters of gauge group SU(2) of the Electroweak Model and gauge group SU(3) of Quantum Chromodynamics are taken identical and tending to zero when the temperature increases. Properties of the elementary particles change drastically at the infinite temperature limit: all particles lose masses, all quarks are monochromatic. Electroweak interactions become long-range and are mediated by neutral currents. Particles of different kind do not interact. It looks like some stratification with only one sort of particles in each stratum. The Standard Model passes in this limit through several stages, which are distinguished by the powers of the contraction parameter. For any stage intermediate models are constructed and the exact expressions for the respective Lagrangians are presented. The developed approach describes the evolution of the Standard Model in the early Universe from the Big Bang up to the end of several nanoseconds.

Authors:
 [1]
  1. Department of Mathematics, Komi Science Center of the Ural Division of the Russian Academy of Sciences, Kommunisticheskaya str. 24, Syktyvkar, 167982 (Russian Federation)
Publication Date:
OSTI Identifier:
22524921
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 03; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; LAGRANGIAN FUNCTION; MONOCHROMATIC RADIATION; NEUTRAL CURRENTS; QUANTUM CHROMODYNAMICS; QUARKS; STANDARD MODEL; STRATIFICATION; SU-2 GROUPS; SU-3 GROUPS; UNIVERSE; WEINBERG-SALAM GAUGE MODEL

Citation Formats

Gromov, N.A., E-mail: gromov@dm.komisc.ru. Elementary particles in the early Universe. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/03/053.
Gromov, N.A., E-mail: gromov@dm.komisc.ru. Elementary particles in the early Universe. United States. doi:10.1088/1475-7516/2016/03/053.
Gromov, N.A., E-mail: gromov@dm.komisc.ru. Tue . "Elementary particles in the early Universe". United States. doi:10.1088/1475-7516/2016/03/053.
@article{osti_22524921,
title = {Elementary particles in the early Universe},
author = {Gromov, N.A., E-mail: gromov@dm.komisc.ru},
abstractNote = {The high-temperature limit of the Standard Model generated by the contractions of gauge groups is discussed. Contraction parameters of gauge group SU(2) of the Electroweak Model and gauge group SU(3) of Quantum Chromodynamics are taken identical and tending to zero when the temperature increases. Properties of the elementary particles change drastically at the infinite temperature limit: all particles lose masses, all quarks are monochromatic. Electroweak interactions become long-range and are mediated by neutral currents. Particles of different kind do not interact. It looks like some stratification with only one sort of particles in each stratum. The Standard Model passes in this limit through several stages, which are distinguished by the powers of the contraction parameter. For any stage intermediate models are constructed and the exact expressions for the respective Lagrangians are presented. The developed approach describes the evolution of the Standard Model in the early Universe from the Big Bang up to the end of several nanoseconds.},
doi = {10.1088/1475-7516/2016/03/053},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 03,
volume = 2016,
place = {United States},
year = {2016},
month = {3}
}