Research Article Open Access

DECOUPLING BETWEEN TORSION AND MAGNETIC FIELDS IN BOUNCING COSMOLOGY AND GALACTIC DYNAMO SEEDS

L. C. Garcia de Andrade1 and A. Ferrandez2
  • 1 , Brazil
  • 2 , Spain
Physics International
Volume 5 No. 1, 2014, 45-48

DOI: https://doi.org/10.3844/pisp.2014.45.48

Submitted On: 5 February 2014 Published On: 27 March 2014

How to Cite: Andrade, L. C. G. D. & Ferrandez, A. (2014). DECOUPLING BETWEEN TORSION AND MAGNETIC FIELDS IN BOUNCING COSMOLOGY AND GALACTIC DYNAMO SEEDS. Physics International, 5(1), 45-48. https://doi.org/10.3844/pisp.2014.45.48

Abstract

Recently Salim et al. (2007), have shown that galactic dynamo seeds can be possibly attainable in bouncing cosmological models with QED Lagrangeans. In this study we generalise their result by include torsion of spacetime in bouncing cosmology. It is shown that by considering a semi-minimal photon-torsion coupling and a Lagrangean of the type RF2 it is possible to find a fast decoupling between magnetic and torsion fields in the contracting phases of the universe. Besides torsion field decays as K∼α2/3 while the magnetic field grows as B∼α−5.5 thus explaining the fast decoupling between the two fields. It is expected that at some point of the contracting phase the amplification of the magnetic field may give rise to a enough strong magnetic field to seed a galactic dynamo.

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Keywords

  • Torsion Theories
  • Bouncing Cosmology
  • Astro-Particle Physics