Universidad Complutense de Madrid
E-Prints Complutense

Isotropy theorem for arbitrary-spin cosmological fields

Impacto

Downloads

Downloads per month over past year

López Maroto, Antonio and Ruiz Cembranos, José Alberto and Nuñez Jareño, Santos José (2014) Isotropy theorem for arbitrary-spin cosmological fields. Journal of Cosmology and Astroparticle Physics (3). ISSN 1475-7516

[img] PDF
Restringido a Repository staff only hasta 31 December 2020.

193kB
[img]
Preview
PDF
126kB

Official URL: http://dx.doi.org/10.1088/1475-7516/2014/03/042




Abstract

We show that the energy-momentum tensor of homogeneous fields of arbitrary spin in an expanding universe is always isotropic in average provided the fields remain bounded and evolve rapidly compared to the rate of expansion. An analytic expression for the average equation of state is obtained for Lagrangians with generic power-law kinetic and potential terms. As an example we consider the behavior of a spin-two field in the standard Fierz-Pauli theory of massive gravity. The results can be extended to general space-time geometries for locally inertial observers.


Item Type:Article
Additional Information:

© 2014 IOP Publishing Ltd.
This work has been supported by MICINN (Spain) project numbers FIS2011-23000, FPA2011-27853-01 and Consolider Ingenio MULTIDARK CSD2009-00064.

Uncontrolled Keywords:Abelian Gauge-Fields, Yang-Mills Fields, Inflation, Universe, Flation
Subjects:Sciences > Physics
ID Code:25929
Deposited On:24 Jun 2014 16:24
Last Modified:19 Nov 2014 12:53

Origin of downloads

Repository Staff Only: item control page