Noether Identities and Gauge-Fixing the Action for Cosmological
Perturbations

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...

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Bibliografiske detaljer
Main Authors:	Lagos, M, Bañados, M, Ferreira, P, García-Sáenz, S
Format:	Journal article
Udgivet:	2013

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