- 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...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1103/PhysRevD.89.024034
-
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- 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:
- Copyright date:
- 2013
- Notes:
- 11 pages, 1 figure
Journal article
Noether Identities and Gauge-Fixing the Action for Cosmological Perturbations
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