Cosmological QCD Z(3) phase transition in the 10 TeV temperature range

Journal Article · Mon Feb 10 00:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.737· OSTI ID:5135852

Ignatius, J; Kajantie, K; Rummukainen, K ^[1]

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1. Department of Theoretical Physics, University of Helsinki, Siltavuorenpenger 20C, SF-00170 Helsinki (Finland)

At high temperatures, in the presence of quarks, QCD has one stable and two metastable Z(3) vacua. We propose a scenario in which the Universe, after inflationary expansion for example at the grand unified scale, lies in one of these metastable vacua. We estimate that the metastable vacuum decayed at {ital T}{similar to}10 TeV. The inhomogeneities caused by this phase transition are over one-tenth of the horizon radius. As a result of a large pressure difference between stable and metastable vacua their density contrast is also large.

• OSTI ID: 5135852
• Journal Information: Physical Review Letters; (United States), Vol. 68:6; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
QUANTUM CHROMODYNAMICS
PHASE TRANSFORMATIONS
COUPLING CONSTANTS
INFLATIONARY UNIVERSE
NUMERICAL ANALYSIS
QUARKS
TEMPERATURE DEPENDENCE
TEV RANGE 01-10
VACUUM STATES
COSMOLOGICAL MODELS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
MATHEMATICAL MODELS
MATHEMATICS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
TEV RANGE
662230* - Quantum Chromodynamics- (1992-)