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gr-qc2011★ 8 cited
SU(2) gauge theory of gravity with topological invariants
Sandipan Sengupta
The most general gravity Lagrangian in four dimensions contains three topological densities, namely Nieh-Yan, Pontryagin and Euler, in addition to the Hilbert-Palatini term. We set…
gr-qc2011★ 26 cited
Topological parameters in gravity
Romesh K. Kaul, Sandipan Sengupta
We present the Hamiltonian analysis of the theory of gravity based on a Lagrangian density containing Hilbert-Palatini term along with three topological densities, Nieh-Yan, Pontry…