Eternal Black Holes and Quasilocal Energy

Details Eternal Black Holes and Quasilocal Energy Eternal Black Holes and Quasilocal Energy

1994-05-19

arxiv.org/abs/gr-qc/9405041v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, revtex, Alberta-Thy-19-94

Scientific paper

We present the gravitational action and Hamiltonian for a spatially bounded region of an eternal black hole. The Hamiltonian is of the general form $H=H_{+} - H_{-}$, where $H_{+}$ and $H_{-}$ are respectively the Hamiltonians for the regions $M_+$ and $M_-$ located in the left and right wedges of the spacetime. We construct explicitly the quasilocal energy for the system and discuss its dependence on the time direction induced at the boundaries of the manifold. This paper extends the analysis of Ref.~[1] to spacetimes possesing a bifurcation surface and two timelike boundaries. The construction suggests that an interpretation of black hole thermodynamics based on thermofield dynamics ideas can be generalized beyond perturbations to the gravitational field itself of a bounded spacetime region (based on the talk presented by E.A. Martinez at the Lake Louise Winter School on Particle Physics and Cosmology, February 20-26, 1994.)

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