Baryogenesis from a Chern-Simons condensate

Journal Article · Thu Sep 15 00:00:00 EDT 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.38.1797· OSTI ID:6763471

Enqvist, K; Nanopoulos, D V; Rao, S

We study a new mechanism of baryon asymmetry generation at the electroweak scale proposed by Shaposhnikov. We give an alternative derivation of the effective action in the presence of background fermion density by showing that the gauge current becomes anomalous in a finite-chemical-potential background. We distinguish between the (physically irrelevant) change in the Chern-Simons number due to large gauge transformations and the (physically relevant) change in it due to a finite chemical potential. At high temperatures, ..delta..B created by tunneling between gauge-invariant vacua can be stored as a Chern-Simons condensate. At the phase transition, this state becomes unstable, but naively it decays to (a gauge transform of) the trivial vacuum with the same Chern-Simons number and hence no baryons are produced.

• Research Organization: Physics Department, University of Wisconsin-Madison, Madison, Wisconsin 53705
• OSTI ID: 6763471
• Journal Information: Phys. Rev. D; (United States), Vol. 38:6
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARYONS
WEINBERG-SALAM GAUGE MODEL
COSMOLOGY
BARYON NUMBER
ASYMMETRY
GAUGE INVARIANCE
GRAND UNIFIED THEORY
PHASE TRANSFORMATIONS
PROBABILITY
SU-2 GROUPS
TIME DEPENDENCE
U-1 GROUPS
UNIVERSE
VACUUM STATES
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
SU GROUPS
SYMMETRY GROUPS
U GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties
640106 - Astrophysics & Cosmology- Cosmology