Varying electromagnetic coupling and primordial magnetic fields

• Type: Article in International Scientific Journal
• Date: 2005

Authors

bertolami, o (Author) Other; monteiro, r (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 71 No. 3

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 21 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-375

DOI: 10.1103/physrevd.71.123525

Abstract (EN): We study the effect of variations of the electromagnetic coupling on the process of generation of primordial magnetic fields. We find that only through a significant growth of the electromagnetic coupling can minimum seed fields be produced. We also show that, if through some process in the early Universe the photon acquires a mass that leads, thanks to inflation, to the generation of primordial magnetic fields, then the influence of variations of the electromagnetic coupling amounts essentially to the results due to the photon effective mass alone.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7