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Title: Role of dissipation in biasing the vacuum selection in quantum field theory at finite temperature

Abstract

We study the symmetry breaking pattern of an O(4) symmetric model of scalar fields, with both charged and neutral fields, interacting with a photon bath. Nagasawa and Brandenberger argued that in favorable circumstances the vacuum manifold would be reduced from S{sup 3} to S{sup 1}. Here it is shown that a selective condensation of the neutral fields, that are not directly coupled to photons, can be achieved in the presence of a minimal external dissipation, i.e. not related to interactions with a bath. This should be relevant in the early universe or in heavy-ion collisions where dissipation occurs due to expansion.

Authors:
;  [1];  [2];  [1]
  1. Instituut-Lorentz, Universiteit Leiden, P. O. Box 9506, 2300 RA Leiden (Netherlands)
  2. Centre for Theoretical Physics, University of Sussex, Falmer, Brighton BN1 9QJ (United Kingdom)
Publication Date:
OSTI Identifier:
20711381
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 72; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.72.045017; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; HEAVY ION REACTIONS; O GROUPS; PHOTONS; QUANTUM FIELD THEORY; SCALAR FIELDS; SYMMETRY BREAKING; UNIVERSE; VACUUM STATES

Citation Formats

Freire, F, Achucarro, A, Antunes, N D, Salmi, P, and Centre for Theoretical Physics, University of Sussex, Falmer, Brighton BN1 9QJ. Role of dissipation in biasing the vacuum selection in quantum field theory at finite temperature. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.045017.
Freire, F, Achucarro, A, Antunes, N D, Salmi, P, & Centre for Theoretical Physics, University of Sussex, Falmer, Brighton BN1 9QJ. Role of dissipation in biasing the vacuum selection in quantum field theory at finite temperature. United States. https://doi.org/10.1103/PhysRevD.72.045017
Freire, F, Achucarro, A, Antunes, N D, Salmi, P, and Centre for Theoretical Physics, University of Sussex, Falmer, Brighton BN1 9QJ. 2005. "Role of dissipation in biasing the vacuum selection in quantum field theory at finite temperature". United States. https://doi.org/10.1103/PhysRevD.72.045017.
@article{osti_20711381,
title = {Role of dissipation in biasing the vacuum selection in quantum field theory at finite temperature},
author = {Freire, F and Achucarro, A and Antunes, N D and Salmi, P and Centre for Theoretical Physics, University of Sussex, Falmer, Brighton BN1 9QJ},
abstractNote = {We study the symmetry breaking pattern of an O(4) symmetric model of scalar fields, with both charged and neutral fields, interacting with a photon bath. Nagasawa and Brandenberger argued that in favorable circumstances the vacuum manifold would be reduced from S{sup 3} to S{sup 1}. Here it is shown that a selective condensation of the neutral fields, that are not directly coupled to photons, can be achieved in the presence of a minimal external dissipation, i.e. not related to interactions with a bath. This should be relevant in the early universe or in heavy-ion collisions where dissipation occurs due to expansion.},
doi = {10.1103/PhysRevD.72.045017},
url = {https://www.osti.gov/biblio/20711381}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 4,
volume = 72,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2005},
month = {Mon Aug 15 00:00:00 EDT 2005}
}