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19942020
most citedGauge transformations in the Lagrangian and Hamiltonian formalisms of generally covariant theories

162 citations · 781 across the 28 of their papers we have counts for

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gr-qc2001★ 14 cited

Boundary conditions from boundary terms, Noether charges and the trace K lagrangian in general relativity

J. M. Pons

We present the Lagrangian whose corresponding action is the trace K action for General Relativity. Although this Lagrangian is second order in the derivatives, it has no second ord…

gr-qc2001

Observables, gauge invariance, and the role of the observers in the limit from general relativity to special relativity

J. M. Pons

Some conceptual issues concerning general invariant theories, with special emphasis on general relativity, are analyzed. The common assertion that observables must be required to b…