Generalized Smarr formula as a local identity for arbitrary dimensional black holes
arXiv:1210.0722 · doi:10.1088/1742-6596/405/1/012023
Abstract
We discuss a method based on Killing symmetries and Komar conserved charges to generalize Smarr mass formula for arbitrary dimensional charged, rotating spacetime. We derive a local identity defined at the event horizon of the rotating black hole in Einstein-Maxwell gravity which reproduces the generalized Smarr formula as a by-product. The advantages of this new identity are the following: (i) unlike Smarr formula, which is non-local, this identity is purely local and hence a switchover between horizon and infinity is unnecessary and (ii) the new identity could be mapped with the recent investigations on emergent gravity.
arXiv comment5 pages, no figures, prepared for the proceedings of COSGRAV-12, Kolkata 7-11 February 2012, to appear in Journal of Physics: Conference Series (JPCS)
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