paper

Local symmetries of non-expanding horizons

arXiv:1004.3200 · doi:10.1088/0264-9381/29/23/235010

Abstract

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.

4 pages, revtex4, no figure. Few typos corrected

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