Production of spin-1/2 particles in inhomogeneous cosmologies

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dc.contributor	Universitat de Barcelona
dc.contributor.author	Campos, Antonio
dc.contributor.author	Verdaguer Oms, Enric, 1950-
dc.date	2010-05-06T10:31:56Z
dc.date	2010-05-06T10:31:56Z
dc.date	1992
dc.identifier.citation	0556-2821
dc.identifier.citation	79620
dc.identifier.uri	http://hdl.handle.net/2445/12410
dc.format	11 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	Published for the American Physical Society by the American Institute of Physics
dc.relation	Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.45.4428
dc.relation	Physical Review D, 1992, vol. 45, núm. 12, p. 4428-4438
dc.relation	http://dx.doi.org/10.1103/PhysRevD.45.4428
dc.rights	(c) The American Physical Society, 1992
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Cosmologia
dc.subject	Relativitat general (Física)
dc.subject	Teoria quàntica de camps
dc.subject	Partícules (Física nuclear)
dc.subject	Materials inhomogenis
dc.subject	Cosmology
dc.subject	General relativity (Physics)
dc.subject	Quantum field theory
dc.subject	Particles (Nuclear physics)
dc.subject	Inhomogeneous materials
dc.title	Production of spin-1/2 particles in inhomogeneous cosmologies
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.abstract	The production of spin-½ 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.

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