scholarly journals Evidence for the adiabatic invariance of the black hole horizon area

1998 ◽  
Vol 58 (10) ◽  
Author(s):  
Avraham E. Mayo
Keyword(s):  
Black Hole ◽  
Black Hole Horizon ◽  
Adiabatic Invariance ◽  
Horizon Area

scholarly journals Distributions of extremal black holes in Calabi-Yau compactifications

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
George Hulsey ◽  
Shamit Kachru ◽  
Sungyeon Yang ◽  
Max Zimet
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Moduli Space ◽  
Black Hole Horizon ◽  
Extremal Black Hole ◽  
Vector Multiplet ◽  
Horizon Area ◽  
Extremal Black Holes

Abstract We study non-supersymmetric extremal black hole excitations of 4d $$ \mathcal{N} $$ N = 2 supersymmetric string vacua arising from compactification on Calabi-Yau threefolds. The values of the (vector multiplet) moduli at the black hole horizon are governed by the attractor mechanism. This raises natural questions, such as “what is the distribution of attractor points on moduli space?” and “how many attractor black holes are there with horizon area up to a certain size?” We employ tools developed by Denef and Douglas [1] to answer these questions.

scholarly journals Maxwell–Boltzmann type Hawking radiation

2017 ◽  
Vol 32 (12) ◽  
pp. 1750071 ◽  
Author(s):  
Youngsub Yoon
Keyword(s):  
Black Hole ◽  
Hawking Radiation ◽  
Radiation Spectrum ◽  
Boltzmann Distribution ◽  
Black Hole Horizon ◽  
Not Given ◽  
Horizon Area ◽  
Einstein Distribution ◽  
Bose Einstein

Twenty years ago, Rovelli proposed that the degeneracy of black hole (i.e. the exponential of the Bekenstein–Hawking entropy) is given by the number of ways the black hole horizon area can be expressed as a sum of unit areas. However, when counting the sum, one should treat the area quanta on the black hole horizon as distinguishable. This distinguishability of area quanta is noted in Rovelli’s paper. Building on this idea, we derive that the Hawking radiation spectrum is not given by Planck radiation spectrum (i.e. Bose–Einstein distribution) but given by Maxwell–Boltzmann distribution.

scholarly journals Initiating the Effective Unification of Black Hole Horizon Area and Entropy Quantization with Quasi-Normal Modes

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
C. Corda ◽  
S. H. Hendi ◽  
R. Katebi ◽  
N. O. Schmidt
Keyword(s):  
Black Hole ◽  
Quantum Gravity ◽  
Surface Area ◽  
Normal Modes ◽  
Black Hole Horizon ◽  
Area Spectrum ◽  
Level Spacing ◽  
Horizon Area ◽  
Entropy Quantization

Black hole (BH) area quantization may be the key to unlocking a unifying theory of quantum gravity (QG). Surmounting evidence in the field of BH research continues to support a horizon (surface) area with a discrete and uniformly spaced spectrum, but there is still no general agreement on the level spacing. In the specialized and important BH case study, our objective is to report and examine the pertinent groundbreaking work of thestrictly thermal and nonstrictly thermalspectrum level spacing of the BH horizon area quantization with included entropy calculations, which aims to tackle this gigantic problem. In particular, such work exemplifies a series of imperative corrections that eventually permits a BH’s horizon area spectrum to begeneralizedfrom strictly thermal to nonstrictly thermal with entropy results, thereby capturing multiple preceding developments by launching an effective unification between them. Moreover, the results are significant because quasi-normal modes (QNM) and “effective states” characterize the transitions between the established levels of the nonstrictly thermal spectrum.

Black Hole Spectroscopy in the Isotropic Coordinate

2013 ◽  
Vol 785-786 ◽  
pp. 1348-1352
Author(s):  
Bing Bing Chen ◽  
Wei Ren ◽  
Jian Tang
Keyword(s):  
Black Hole ◽  
Black Hole Horizon ◽  
Schwarzschild Black Hole ◽  
Horizon Area ◽  
Oscillation Velocity

In this paper, the black hole spectroscopy is intriguingly described in the isotropic coordinate by combining the black hole property of adiabaticity and the oscillation velocity of the black hole horizon. The result shows that the horizon area of a Schwarzschild black hole is quantized independent of the choice of coordinates, with an equally spaced spectroscopy always given by .

scholarly journals Enhancement of supersymmetry near a 5D black hole horizon

1997 ◽  
Vol 55 (6) ◽  
pp. 3647-3653 ◽  
Author(s):  
Ali Chamseddine ◽  
Sergio Ferrara ◽  
Gary W. Gibbons ◽  
Renata Kallosh
Keyword(s):  
Black Hole ◽  
Black Hole Horizon

scholarly journals DIRECTLY OBSERVING ENTROPY ACCUMULATION ON THE HORIZON AND HOLOGRAPHY

2012 ◽  
Vol 21 (11) ◽  
pp. 1242010
Author(s):  
ARIEL EDERY ◽  
HUGUES BEAUCHESNE
Keyword(s):  
Black Hole ◽  
Numerical Simulations ◽  
Gravitational Collapse ◽  
Spherical Symmetry ◽  
Proper Time ◽  
Horizon Area

Recent numerical simulations of gravitational collapse show that there exists a special foliation of the spacetime where matter and entropy accumulate directly on the inside of the horizon surface. In this foliation, the time coincides with the proper time of the asymptotic static observer (ASO) and for spherical symmetry, this corresponds to isotropic co-ordinates. In this gauge, the three-volume in the interior shrinks to zero and only the horizon area remains at the end of collapse. In a different foliation, matter and entropy accumulate in the volume. The entropy is however independent of the foliation. Black hole holography is therefore a mapping from an arbitrary foliation, where information resides in the volume, to the special ASO frame, where it resides directly on the horizon surface.

scholarly journals Chaos of Wilson loop from string motion near black hole horizon

2018 ◽  
Vol 98 (8) ◽  
Author(s):  
Koji Hashimoto ◽  
Keiju Murata ◽  
Norihiro Tanahashi
Keyword(s):  
Black Hole ◽  
Wilson Loop ◽  
Black Hole Horizon

scholarly journals Cosmological and black hole horizon fluctuations

1997 ◽  
Vol 56 (4) ◽  
pp. 2226-2235 ◽  
Author(s):  
L. H. Ford ◽  
N. F. Svaiter
Keyword(s):  
Black Hole ◽  
Black Hole Horizon
Sign in / Sign up

Export Citation Format

Share Document