scholarly journals Proof of the generalized second law for quasistationary semiclassical black holes

1993 ◽  
Vol 71 (24) ◽  
pp. 3902-3905 ◽  
Author(s):  
Valery P. Frolov ◽  
Don N. Page
Keyword(s):  
Black Holes ◽  
Second Law ◽  
Generalized Second Law

scholarly journals Phantom accretion by black holes and the generalized second law of thermodynamics

2010 ◽  
Vol 33 (5-6) ◽  
pp. 292-295 ◽  
Author(s):  
J.A.S. Lima ◽  
S.H. Pereira ◽  
J.E. Horvath ◽  
Daniel C. Guariento
Keyword(s):  
Black Holes ◽  
Second Law Of Thermodynamics ◽  
Second Law ◽  
Generalized Second Law

scholarly journals ENTROPY OF COSMOLOGICAL BLACK HOLES AND THE GENERALIZED SECOND LAW IN THE PHANTOM-ENERGY-DOMINATED UNIVERSE

2011 ◽  
Vol 20 (02) ◽  
pp. 233-252 ◽  
Author(s):  
KHIREDDINE NOUICER
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Equation Of State ◽  
State Parameter ◽  
Phantom Energy ◽  
Energy Conditions ◽  
Second Law ◽  
Brick Wall ◽  
Generalized Second Law ◽  
Equation Of State Parameter

Adopting the thin layer improved brick wall method, we investigate the thermodynamics of a black hole embedded in a spatially flat Friedmann–Robertson–Walker universe. We calculate the temperature and the entropy at every apparent horizon for arbitrary solution of the scale factor. We show that the temperature and entropy display a nontrivial behavior as functions of time. In the case of black holes immersed in a universe driven by phantom energy, we show that for specific ranges of the equation-of-state parameter and apparent horizons the entropy is compatible with the D-bound conjecture, and even the null, dominant and strong energy conditions are violated. In the case of accretion of phantom energy onto a black hole with small Hawking–Hayward quasi-local mass, we obtain an equation-of-state parameter in the range w ≤ -5/3, guaranteeing the validity of the generalized second law.

scholarly journals Generalized second law for cosmology

2016 ◽  
Vol 93 (2) ◽  
Author(s):  
Raphael Bousso ◽  
Netta Engelhardt
Keyword(s):  
Second Law ◽  
Generalized Second Law
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