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Gauge versus (hidden) physical symmetries of FLRW cosmologies

Calcinari, Andrea et al.
arXiv (All) · Papers
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In generally covariant theories, evolution in coordinate time is a gauge transformation, so that a symmetry made manifest in a gauge-fixed description need not be a symmetry of the physical dynamics. At the same time, deparametrisation removes gauge redundancies but may hide physical symmetries, in
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