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The Cosmology of a Universe with Spontaneously-Broken Lorentz Symmetry

Abstract:

A self consistent effective field theory of modified gravity has recently been proposed with spontaneous breaking of local Lorentz invariance. The symmetry is broken by a vector field with the wrong-sign mass term and it has been shown to have additional graviton modes and modified dispersion relations. In this paper we study the evolution of a homogeneous and isotropic universe in the presence of such a vector field with a minimum lying along the time-like direction. A plethora of different ...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.75.044014
Journal:
Phys.Rev.D More from this journal
Volume:
75
Issue:
4
Pages:
044014
Publication date:
2006-10-04
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
Keywords:
Pubs id:
pubs:207714
UUID:
uuid:06751430-50d1-4e07-8840-e7cee90e3787
Local pid:
pubs:207714
Source identifiers:
207714
Deposit date:
2012-12-19

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