Quasilocal Smarr relation for an asymptotically flat spacetime
2018
A quasilocal Smarr relation is obtained from Euler's theorem for $n$-dimensional asymptotically flat spacetimes and it is checked through several examples by calculating quasilocal variables using the Brown-York quasilocal formalism, along with Mann-Marolf counterterms. To find the entropy in the quasilocal frame, we define a quasilocal free energy from the Euclidean gravity action with a Tolman temperature. We discovered that the quasilocal free energy definition is not altered by a surface pressure term, and the entropy obtained through this method agrees with the usual Bekenstein-Hawking entropy. We also check that the quasilocal free energy combined with the quasilocal Euclidean action value is consistent with our quasilocal Smarr relation.
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