Global texture as the origin of cosmic structure

Journal Article · Mon Dec 11 04:00:00 EST 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.2625· OSTI ID:7273502

Turok, N ^[1]

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1. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (USA)

If a unified theory possesses non-Abelian global symmetries which are spontaneously broken it gives rise to a three-dimensional defect known as texture. In an expanding universe texture obeys a scaling solution,'' which produces a constant density perturbation at horizon crossing of {delta}{rho}/{rho}{approx}{ital m}{sub GUT}{sup 2}/m{sub Planck}{sup 2}, where {ital m}{sub GUT} is the scale of symmetry breaking. These (isocurvature) perturbations are broadly of Harrison-Zeldovich form, but are non-Gaussian, having strong spikes'' in the density field. Consequences for microwave background anisotropy are briefly discussed.

• OSTI ID: 7273502
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:24; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

640101 -- Astrophysics & Cosmology-- Cosmic Radiation
645400* -- High Energy Physics-- Field Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CONSTRAINTS
COSMIC RADIATION
ELEMENTARY PARTICLES
FIELD THEORIES
GOLDSTONE BOSONS
HIGGS BOSONS
IONIZING RADIATIONS
LIE GROUPS
MATHEMATICAL MODELS
NONLINEAR PROBLEMS
PARTICLE MODELS
POSTULATED PARTICLES
RADIATIONS
SCALAR FIELDS
SIGMA MODEL
SO GROUPS
SU GROUPS
SU-2 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED-FIELD THEORIES
UNIVERSE