12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Seed perturbations for primordial magnetic fiel...
View graph of relations

« Back

Seed perturbations for primordial magnetic fields from MSSM flat directions

Research output: Contribution to journalJournal article

Published

Article number1
Journal publication date8/11/2004
JournalJournal of Cosmology and Astroparticle Physics
Journal number11
Volume2004
Original languageEnglish

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.

Bibliographic note

4 pages, RevTeX4