Noether Identities and Gauge-Fixing the Action for Cosmological Perturbations
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 B...
| Main Authors: | , , , |
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| 格式: | Journal article |
| 出版: |
2013
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