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Gravitational Entropy of Kerr Black Holes [PDF]
General Relativity and Gravitation, 2014 Classical invariants of General Relativity can be used to approximate the entropy of the gravitational field. In this work, we study two proposed estimators based on scalars constructed out from the Weyl tensor, in Kerr spacetime.
Gustavo Esteban Romero
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Gravitational Spin Entropy Production
International Journal of Theoretical Physics, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Esfahani, B. Nasr, Dehdashti, S.
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Nature, 1966
THE application of the second law of thermodynamics to bodies interacting through gravitational forces has been the subject of much controversy and discussion (see, for example, Kurth's Mechanics of Stellar Systems1). A purely phenomenological discussion of such a problem is unlikely to provide an answer to this problem and it is therefore important to
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THE application of the second law of thermodynamics to bodies interacting through gravitational forces has been the subject of much controversy and discussion (see, for example, Kurth's Mechanics of Stellar Systems1). A purely phenomenological discussion of such a problem is unlikely to provide an answer to this problem and it is therefore important to
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International Journal of Theoretical Physics, 1977
Einstein's gravitational theory is analyzed from a thermodynamic point of view. A thermodynamic potential characterizing the sources of gravitational fields is presented. By means of this potential the entropy production density is derived. Einstein's equations with dissipative terms appear as linear phenomenological laws in the sense of irreversible ...
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Einstein's gravitational theory is analyzed from a thermodynamic point of view. A thermodynamic potential characterizing the sources of gravitational fields is presented. By means of this potential the entropy production density is derived. Einstein's equations with dissipative terms appear as linear phenomenological laws in the sense of irreversible ...
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Weyl tensor and gravitational entropy
Physical Review D, 1988There is a conjecture due to Penrose that there may be a relation between the Weyl curvature tensor and gravitational entropy. In this paper, this conjecture is studied in the context of a specific model, the Gowdy cosmology. The square of the curvature is calculated as an operator and its expectation values in states of clumped and unclumped gravitons
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The N2HDM, Entropy Production and Stochastic Gravitational Waves [PDF]
Nuclear Physics BThis study undertakes a reconsideration of the potential for a first-order electroweak phase transition, focusing on the next-to-minimal two Higgs doublet model (N2HDM). Our exploration spans diverse parameter spaces associated with the phase transition,
Arnab Chaudhuri
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Entropy Change in Gravitational Collapse
International Journal of Theoretical Physics, 1994zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Gravitational entropy: Beyond the black hole
Physical Review D, 1986We attempt to establish the existence of gravitational entropy for a thin spherical shell of matter as a function of radius by examining the modifications to the thermodynamics of a black hole at the center of such a shell. We show that the shell has the effect of depressing the temperature of the hole, but that small exchanges of energy between the ...
, Davies, , Ford, , Page
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Entropy of self-gravitating radiation systems and the entropy of black holes
Physical Review D, 1994The entropy of a self-gravitating radiation system (SGRS) confined to a spherical box is calculated by using the equation of state of radiation near the black-hole horizon, which was derived by Li and Liu. Compared with the result given by Sorkin, Wald, and Zhang, there is no divergence problem with the result of this paper.
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On the intrinsic entropy of the gravitational field
General Relativity and Gravitation, 1985I show that in linearized general relativity it is impossible to construct a detector by the use of which the quantum state of the linearized gravitational field could be reliably determined. This is because there is no material satisfying the positive energy condition which can serve as a good conductor or absorber of gravitational radiation over a ...
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