Quasilocal first law of black hole dynamics from local Lorentz transformations

Abstract Quasilocal formulations of black hole are of immense importance since they reveal the essential and minimal assumptions required for a consistent description of black hole horizon, without relying on the asymptotic boundary conditions on fields. Using the quasilocal formulation of Isolated...

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Main Authors: Ayan Chatterjee, Avirup Ghosh
Format: Article
Language:English
Published: SpringerOpen 2018-07-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-018-6021-8
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author Ayan Chatterjee
Avirup Ghosh
author_facet Ayan Chatterjee
Avirup Ghosh
author_sort Ayan Chatterjee
collection DOAJ
description Abstract Quasilocal formulations of black hole are of immense importance since they reveal the essential and minimal assumptions required for a consistent description of black hole horizon, without relying on the asymptotic boundary conditions on fields. Using the quasilocal formulation of Isolated Horizons, we construct the Hamiltonian charges corresponding to local Lorentz transformations on a spacetime admitting isolated horizon as an internal boundary. From this construction, it arises quite generally that the area of the horizon of an isolated black hole is the Hamiltonian charge for local Lorentz boost on the horizon. Using this argument further, it is shown that, observers at a fixed proper distance $$l_{0}$$ l0 , very close to the horizon, may define a notion of horizon energy given by $$E=A/8\pi G l_{0}$$ E=A/8πGl0 , the surface gravity is given by $$\kappa =1/l_{0}$$ κ=1/l0 , and consequently, the first law can be written in the quasilocal setting as $$\delta E=(\kappa /8\pi G)\delta A$$ δE=(κ/8πG)δA .
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spelling doaj.art-a85436e407f544d6b3e2c4e6ed1d47a62022-12-21T23:55:17ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-07-017871810.1140/epjc/s10052-018-6021-8Quasilocal first law of black hole dynamics from local Lorentz transformationsAyan Chatterjee0Avirup Ghosh1Department of Physics and Astronomical Science, Central University of Himachal PradeshTheory Division, Saha Institute of Nuclear PhysicsAbstract Quasilocal formulations of black hole are of immense importance since they reveal the essential and minimal assumptions required for a consistent description of black hole horizon, without relying on the asymptotic boundary conditions on fields. Using the quasilocal formulation of Isolated Horizons, we construct the Hamiltonian charges corresponding to local Lorentz transformations on a spacetime admitting isolated horizon as an internal boundary. From this construction, it arises quite generally that the area of the horizon of an isolated black hole is the Hamiltonian charge for local Lorentz boost on the horizon. Using this argument further, it is shown that, observers at a fixed proper distance $$l_{0}$$ l0 , very close to the horizon, may define a notion of horizon energy given by $$E=A/8\pi G l_{0}$$ E=A/8πGl0 , the surface gravity is given by $$\kappa =1/l_{0}$$ κ=1/l0 , and consequently, the first law can be written in the quasilocal setting as $$\delta E=(\kappa /8\pi G)\delta A$$ δE=(κ/8πG)δA .http://link.springer.com/article/10.1140/epjc/s10052-018-6021-8
spellingShingle Ayan Chatterjee
Avirup Ghosh
Quasilocal first law of black hole dynamics from local Lorentz transformations
European Physical Journal C: Particles and Fields
title Quasilocal first law of black hole dynamics from local Lorentz transformations
title_full Quasilocal first law of black hole dynamics from local Lorentz transformations
title_fullStr Quasilocal first law of black hole dynamics from local Lorentz transformations
title_full_unstemmed Quasilocal first law of black hole dynamics from local Lorentz transformations
title_short Quasilocal first law of black hole dynamics from local Lorentz transformations
title_sort quasilocal first law of black hole dynamics from local lorentz transformations
url http://link.springer.com/article/10.1140/epjc/s10052-018-6021-8
work_keys_str_mv AT ayanchatterjee quasilocalfirstlawofblackholedynamicsfromlocallorentztransformations
AT avirupghosh quasilocalfirstlawofblackholedynamicsfromlocallorentztransformations