Exact solutions to Elko spinors in spatially flat Friedmann-Robertson-Walker spacetimes
Abstract
In this paper we present exact solutions to the so-called Elko spinors for three models of expanding universe, namely the de Sitter, linear and the radiation type evolution. The study was restricted to flat, homogeneous and isotropic Friedmann-Robertson-Walker backgrounds. Starting with an Elko spinor we present the solutions for these cases and compare to the case of Dirac spinors. Besides, an attempt to use Elko spinors as a dark energy candidate in the cosmological context is investigated.
- Publication:
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Journal of Cosmology and Astroparticle Physics
- Pub Date:
- March 2014
- DOI:
- 10.1088/1475-7516/2014/03/009
- arXiv:
- arXiv:1401.3252
- Bibcode:
- 2014JCAP...03..009H
- Keywords:
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- High Energy Physics - Theory
- E-Print:
- 18 pages, section IV of last version removed