Baryon-number fluctuations in a quark-hadron phase transition

Journal Article · Fri Apr 15 00:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.4023· OSTI ID:5020231

Singh, C P; Patra, B K; Uddin, S ^[1]

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1. Department of Physics, Banaras Hindu University, Varanasi-221 005 (India)

Isothermal baryon-number fluctuations arising from a first-order quark-hadron phase transition in the early Universe are obtained by including the quark-gluon interactions up to the order [ital g][sub [ital s]][sup 3] in the perturbative QCD coupling constant in the quark-gluon plasma (QGP) phase and the finite-size volume corrections for the hadrons in the hadron-resonance gas (HRG) and their effects on the primordial nucleosynthesis (PNS) are analyzed. The ratio of the baryon-number densities in the QGP and HRG phases at the critical temperature [ital T][sub [ital c]] is larger than one in the range 150 MeV[lt][ital T][sub [ital c]][lt]260 MeV. However, it is far larger than one even when [ital T][sub [ital c]] is outside this range, thus affecting primordial nucleosynthesis significantly.

• OSTI ID: 5020231
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 49:8; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON NUMBER
FLUCTUATIONS
PHASE TRANSFORMATIONS
QUARK-HADRON INTERACTIONS
COUPLING CONSTANTS
CRITICAL TEMPERATURE
NUCLEOSYNTHESIS
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
QUARK-GLUON INTERACTIONS
FIELD THEORIES
INTERACTIONS
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
SYNTHESIS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VARIATIONS
661310* - Relativity & Gravitation- (1992-)
662230 - Quantum Chromodynamics- (1992-)