Variation of the gauge couplings during inflation | Zendy

Massimo Giovannini | Zendy

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Variation of the gauge couplings during inflation

Author(s) -

Massimo Giovannini

Publication year - 2001

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.64.061301

Subject(s) - gauge (firearms) , physics , inflation (cosmology) , coupling (piping) , gauge theory , theoretical physics , quantum electrodynamics , mathematical physics , mechanical engineering , archaeology , engineering , history

It is shown that the evolution of the (Abelian) gauge coupling during aninflationary phase of de Sitter type drives the growth of the two-pointfunction of the magnetic inhomogeneities. After examining the constraints onthe variation of the gauge coupling arising in a standard model of inflationaryand post-inflationary evolution, magnetohydrodynamical equations aregeneralized to the case of time evolving gauge coupling. It is argued thatlarge scale magnetic fields can be copiously generated. Other possibleimplications of the model are outlined.Comment: 5 pages in RevTex style, one figur

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