Particle creation in inhomogeneous spacetimes
Journal Article
·
· Phys. Rev. D; (United States)
We study the creation of particles by inhomogeneous perturbations of spatially flat Friedmann-Robertson-Walker cosmologies. For massless scalar fields, the pair-creation probability can be expressed in terms of geometric quantities (curvature invariants). The results suggest that inhomogeneities on scales up to the particle horizon will be damped out near the Planck time. Perturbations on scales larger than the horizon are explicitly shown to yield no created pairs. The results generalize to inhomogeneous spacetimes several earlier studies of pair creation in homogeneous anisotropic cosmologies.
- Research Organization:
- Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
- OSTI ID:
- 6538847
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:2; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640106* -- Astrophysics & Cosmology-- Cosmology
645400 -- High Energy Physics-- Field Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BLACK HOLES
COSMOLOGICAL MODELS
EINSTEIN FIELD EQUATIONS
ELEMENTARY PARTICLES
ENTROPY
EQUATIONS
FIELD EQUATIONS
FIELD THEORIES
GENERAL RELATIVITY THEORY
GRAVITATIONAL FIELDS
INTERACTIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MINKOWSKI SPACE
PAIR PRODUCTION
PERTURBATION THEORY
PHYSICAL PROPERTIES
PROBABILITY
QUANTUM FIELD THEORY
RELATIVITY THEORY
SCALAR FIELDS
SPACE
THERMODYNAMIC PROPERTIES
UNIVERSE
645400 -- High Energy Physics-- Field Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BLACK HOLES
COSMOLOGICAL MODELS
EINSTEIN FIELD EQUATIONS
ELEMENTARY PARTICLES
ENTROPY
EQUATIONS
FIELD EQUATIONS
FIELD THEORIES
GENERAL RELATIVITY THEORY
GRAVITATIONAL FIELDS
INTERACTIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MINKOWSKI SPACE
PAIR PRODUCTION
PERTURBATION THEORY
PHYSICAL PROPERTIES
PROBABILITY
QUANTUM FIELD THEORY
RELATIVITY THEORY
SCALAR FIELDS
SPACE
THERMODYNAMIC PROPERTIES
UNIVERSE