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Noether Identities and Gauge-Fixing the Action for Cosmological Perturbations

Abstract:

We propose and develop a general algorithm for finding the action for cosmological perturbations which rivals the conventional, gauge-invariant approach and can be applied to theories with more than one metric. We then apply it to a particular case of bigravity, focusing on the Eddington- inspired Born-Infeld theory, and show that we can obtain a nearly scale-invariant power spectrum for both scalar and tensor primordial quantum perturbations. Unfortunately, in the case of the minimal Eddingt...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.89.024034

Authors


Bañados, M More by this author
Ferreira, PG More by this author
García-Sáenz, S More by this author
Journal:
Phys.Rev.D
Volume:
89
Issue:
2
Pages:
024034
Publication date:
2013-11-15
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
URN:
uuid:18946cc8-c91f-4b99-8d94-b01c3b5d3cc9
Source identifiers:
445604
Local pid:
pubs:445604
Keywords:

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