Seed perturbations for primordial magnetic fields from MSSM flat directions

Enqvist, Kari and Jokinen, Asko and Mazumdar, Anupam (2004) Seed perturbations for primordial magnetic fields from MSSM flat directions. Journal of Cosmology and Astroparticle Physics, 2004 (11). ISSN 1475-7516

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Abstract

We demonstrate that the MSSM flat directions can naturally account for the seed magnetic fields in the early Universe. The non-zero vacuum expectation value of an MSSM flat direction condensate provides masses to the gauge fields and thereby breaks conformal invariance. During inflation the condensate receives spatial perturbations and $SU(2) x U(1)_Y$ gauge currents are generated together with (hyper)magnetic fields. When these long wavelength vector perturbations reenter our horizon they give rise to $U(1)_{em}$ magnetic fields with an amplitude of $10^{-30}$ Gauss, as required by the dynamo mechanism.

Item Type: Journal Article
Journal or Publication Title: Journal of Cosmology and Astroparticle Physics
Additional Information: 4 pages, RevTeX4
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3103
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63499
Deposited By: ep_importer_pure
Deposited On: 19 Apr 2013 09:11
Refereed?: Yes
Published?: Published
Last Modified: 10 Jun 2019 23:36
URI: https://eprints.lancs.ac.uk/id/eprint/63499

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