Production of spin-1/2 particles in inhomogeneous cosmologies

Journal Article · Mon Jun 15 04:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.4428· OSTI ID:7184564

Campos, A; Verdaguer, E ^[1]

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1. Grup de Fisica Teorica, Universitat Autonoma de Barcelona, 08193 Bellaterra (Barcelona) (Spain)

The production of spin-1/2 particles by small gravitational inhomogeneities is discussed by using a perturbative approach based on the evaluation of the scattering matrix. We compute the production of massive and massless particles by linear gravitational inhomogeneities in flat spacetime and the production of massless particles in an expanding universe described by the spatially flat Friedmann-Robertson-Walker models with small inhomogeneities. As in the case of scalar particles the total pair-creation probability is given in terms of geometric invariants of the spacetime.

• OSTI ID: 7184564
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:12; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110* -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
COSMOLOGY
ELEMENTARY PARTICLES
ENTROPY
EQUATIONS
FIELD EQUATIONS
GALAXIES
GRAVITATIONAL FIELDS
INTERACTIONS
MASSLESS PARTICLES
MATRICES
PAIR PRODUCTION
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PERTURBATION THEORY
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PROBABILITY
S MATRIX
SPACE-TIME
SPIN
THERMODYNAMIC PROPERTIES
TIME DEPENDENCE
UNIVERSE