Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-04-19
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
4 pages, revtex4, no figure. Few typos corrected
Scientific paper
Local symmetries of a non-expanding horizon has been investigated in the 1st
order formulation of gravity. When applied to a spherically symmetric isolated
horizon only a U(1) subgroup of the Lorentz group survives as residual local
symmetry that one can make use of in constructing an effective theory on the
horizon.
Basu Rudranil
Chatterjee Ayan
Ghosh Amit
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