Cosmological constraints on pseudo Nambu-Goldstone bosons

Journal Article · Wed Apr 15 00:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.2674· OSTI ID:7302276

Frieman, J A ^[1]; Jaffe, A H ^[2]

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1. NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States)
2. Department of Astronomy and Astrophysics, The University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 (United States)

Particle-physics models with pseudo Nambu-Goldstone bosons (PNGB's) are characterized by two mass scales: a global spontaneous-symmetry-breaking scale {ital f} and a soft (explicit) symmetry-breaking scale {Lambda}. We investigate general model-insensitive constraints on this two-dimensional parameter space arising from the cosmological and astrophysical effects of PNGB's. In particular, we study constraints arising from vacuum misalignment and thermal production of PNGB's, topological defects, and the cosmological effects of PNGB decay products, as well as astrophysical constraints from stellar PNGB emission. Bounds on the Peccei-Quinn axion scale, 10{sup 10} GeV{approx lt}{ital f}{sub PQ}{approx lt}10{sup 10}--10{sup 12} GeV, emerge as a special case, where the soft breaking scale is fixed at {Lambda}{sub QCD}{congruent}100 MeV.

• OSTI ID: 7302276
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 45:8; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL MODELS
GOLDSTONE BOSONS
ASTROPHYSICS
AXIONS
CHIRAL SYMMETRY
LAGRANGIAN FUNCTION
QUANTUM CHROMODYNAMICS
SCALAR FIELDS
STRING MODELS
SUPERNOVAE
SYMMETRY BREAKING
TOPOLOGY
TWO-DIMENSIONAL CALCULATIONS
UNIVERSE
VACUUM STATES
BOSONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
EXTENDED PARTICLE MODEL
FIELD THEORIES
FUNCTIONS
MATHEMATICAL MODELS
MATHEMATICS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
STARS
SYMMETRY
VARIABLE STARS
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)
662120 - General Theory of Particles & Fields- Symmetry
Conservation Laws
Currents & Their Properties- (1992-)