scholarly journals Dyonic AdS 4 black hole entropy and attractors via entropy function

2016 ◽  
Vol 2016 (9) ◽  
Author(s):  
Prieslei Goulart
Keyword(s):  
Black Hole ◽  
Black Hole Entropy ◽  
Entropy Function

scholarly journals Black hole entropy function for toric theories via Bethe Ansatz

2020 ◽  
Vol 2020 (4) ◽  
Author(s):  
Assaf Lanir ◽  
Anton Nedelin ◽  
Orr Sela
Keyword(s):  
Black Hole ◽  
Bethe Ansatz ◽  
Black Hole Entropy ◽  
Entropy Function

scholarly journals QUANTUM ENTROPY FUNCTION FROM AdS2/CFT1 CORRESPONDENCE

2009 ◽  
Vol 24 (23) ◽  
pp. 4225-4244 ◽  
Author(s):  
ASHOKE SEN
Keyword(s):  
Black Hole ◽  
Partition Function ◽  
Classical Limit ◽  
Black Hole Entropy ◽  
Entropy Function ◽  
Quantum Entropy ◽  
Extremal Black Hole ◽  
Statistical Entropy ◽  
Specific Relation ◽  
Horizon Geometry

We review and extend recent attempts to find a precise relation between extremal black hole entropy and degeneracy of microstates using AdS 2/ CFT 1 correspondence. Our analysis leads to a specific relation between degeneracy of black hole microstates and an appropriately defined partition function of string theory on the near horizon geometry — named the quantum entropy function. In the classical limit this reduces to the usual relation between statistical entropy and Wald entropy.

scholarly journals Dilaton black hole entropy from entropy function formalism

2019 ◽  
Vol 79 (9) ◽  
Author(s):  
Komeil Babaei Velni ◽  
Ali Jalali ◽  
Bahareh Khoshdelan
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
String Theory ◽  
Black Hole Entropy ◽  
Entropy Function ◽  
Extremum Point ◽  
Function Formalism ◽  
Dilaton Black Hole

Abstract It has been shown that the entropy function formalism is an efficient way to calculate the entropy of black holes in string theory. We check this formalism for the extremal charged dilaton black hole. We find the general four-derivative correction on the black hole entropy from the value of the entropy function at its extremum point.

Black hole entropy function and attractor equations

2007 ◽  
Vol 55 (5-7) ◽  
pp. 593-597
Author(s):  
G. Lopes Cardoso
Keyword(s):  
Black Hole ◽  
Black Hole Entropy ◽  
Entropy Function

scholarly journals Reply to Pessoa, P.; Arderucio Costa, B., Comment on “Tsallis, C. Black Hole Entropy: A Closer Look. Entropy 2020, 22, 17”

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 630
Author(s):  
Constantino Tsallis
Keyword(s):  
Black Hole ◽  
Black Hole Entropy ◽  
Recent Comment

In the present Reply we restrict our focus only onto the main erroneous claims by Pessoa and Costa in their recent Comment (Entropy 2020, 22, 1110).

scholarly journals Area Entropy and Quantized Mass of Black Holes from Information Theory

Entropy ◽  
2021 ◽  
Vol 23 (7) ◽  
pp. 858
Author(s):  
Dongshan He ◽  
Qingyu Cai
Keyword(s):  
Information Theory ◽  
Black Hole ◽  
Black Hole Entropy ◽  
Quantum Corrections ◽  
Compton Wavelength ◽  
Information Theoretic ◽  
Curved Space ◽  
Thermodynamic Entropy ◽  
Hole Area ◽  
The Relationship

In this paper, we present a derivation of the black hole area entropy with the relationship between entropy and information. The curved space of a black hole allows objects to be imaged in the same way as camera lenses. The maximal information that a black hole can gain is limited by both the Compton wavelength of the object and the diameter of the black hole. When an object falls into a black hole, its information disappears due to the no-hair theorem, and the entropy of the black hole increases correspondingly. The area entropy of a black hole can thus be obtained, which indicates that the Bekenstein–Hawking entropy is information entropy rather than thermodynamic entropy. The quantum corrections of black hole entropy are also obtained according to the limit of Compton wavelength of the captured particles, which makes the mass of a black hole naturally quantized. Our work provides an information-theoretic perspective for understanding the nature of black hole entropy.

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