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Interactions of cosmological gravitational waves and magnetic fields

Contributors

Fenu, Elisa; Durrer, Ruth

Published in

Physical review. D. Particles, fields, gravitation, and cosmology, vol. 79, no. 2, p. 1-20

Publication date

2009

Abstract

The energy momentum tensor of a magnetic field always contains a spin-2 component in its anisotropic stress and therefore generates gravitational waves. It has been argued in the literature (Caprini and Durrer [C. Caprini and R. Durrer, Phys. Rev. D 65, 023517 (2001)]) that this gravitational wave production can be very strong and that backreaction cannot be neglected. On the other hand, a gravitational wave background does affect the evolution of magnetic fields. It has also been argued (Tsagas et al. [C. G. Tsagas, P. K. S. Dunsby, and M. Marklund, Phys. Lett. B 561, 17 (2003)] [C. Tsagas, Phys. Rev. D 72, 123509 (2005)]) that this can lead to a very strong amplification of a primordial magnetic field. In this paper we revisit these claims and study backreaction to second order.

UNIGE affiliation entities

Citation (ISO format)

FENU, Elisa, DURRER, Ruth. Interactions of cosmological gravitational waves and magnetic fields. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2009, vol. 79, n° 2, p. 1–20. doi: 10.1103/PhysRevD.79.024021

Main files (1)

Article (Accepted version)

Identifiers

Journal ISSN

1550-2368
651views
924downloads

Technical informations

Creation

06/03/2009 11:38:00

First validation

06/03/2009 11:38:00

Update

14/03/2023 15:03:09

Status update

14/03/2023 15:03:09

Last indexation

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