Results 61 to 70 of about 94,999 (192)

Can Extremal Black Holes Have Non-Zero Entropy ? [PDF]

, 1996
We give several pieces of evidence to show that extremal black holes cannot be obtained as limits of non-extremal black holes. We review arguments in the literature showing that the entropy of extremal black holes is zero, while that of near-extremal ...
Arundhati Dasgupta, Bekenstein J., Christodoulou D., Hawking S. W., Hawking S. W., P. Ramadevi, Saurya Das, Susskind L., Teitelboim C.   +8 more
core   +2 more sources

String scale black holes at large D

Journal of High Energy Physics, 2022
We study aspects of black holes near the Hagedorn temperature. The large dimension expansion introduced by Soda, Emparan, Grumiller and Tanabe connects them to the well studied two dimensional black hole based on SL(2) k /U(1).
Yiming Chen, Juan Maldacena
doaj   +1 more source

Comments on black holes in string theory [PDF]

Classical and Quantum Gravity, 2000
13 pages.
openaire   +3 more sources

Boosts, Schwarzschild Black Holes and Absorption cross-sections in M theory [PDF]

, 1997
$D$ dimensional neutral black strings wrapped on a circle are related to $(D-1)$ dimensional charged black holes by boosts. We show that the boost has to be performed in the covering space and the boosted coordinate has to be compactified on a circle ...
Das, Sumit R., Mathur, Samir D., Rama, S. Kalyana, Ramadevi, P.   +3 more
core   +2 more sources

Evaporation of Microscopic Black Holes in String Theory and the Bound on Species [PDF]

, 2009
We address the question how string compactifications with D-branes are consistent with the black hole bound, which arises in any theory with number of particle species to which the black holes can evaporate.
't Hooft, Allen, Anchordoqui, Anchordoqui, Antoniadis, Antoniadis, Arkani-Hamed, Balasubramanian, Bekenstein, Blumenhagen, Bowick, Brustein, Carter, Coleman, Conlon, Dimopoulos, Douglas, Dvali, Dvali, Dvali, Dvali, Dvali, Dvali, Dvali, Dvali, Hartle, Israel, Krauss, Lüst, Lüst, Preskill, Teitelboim   +31 more
core   +2 more sources

From black strings to fundamental strings: non-uniformity and phase transitions

Journal of High Energy Physics
We discuss the transition between black strings and fundamental strings in the presence of a compact dimension, S z 1 $$ {\mathbbm{S}}_z^1 $$ . In particular, we study the Horowitz-Polchinski effective field theory in ℝ d × S z 1 $$ {\mathbb{R}}^d\times {
Jinwei Chu
doaj   +1 more source

Phases of string stars in the presence of a spatial circle

Journal of High Energy Physics
In string theory, black holes are expected to transition into string stars as their Hawking temperatures approach the Hagedorn temperature. We study string stars and their phase transitions in the Euclidean spacetime ℝ d × S τ 1 $$ {\mathbbm{S}}_{\tau}^1
Jinwei Chu
doaj   +1 more source

Microstates of non-extremal black holes: a new hope

Journal of High Energy Physics
We provide a new roadmap for constructing microstates of non-extremal black holes in supergravity. First, we review the non-linear sigma model of five-dimensional supergravity governing stationary solutions with a U(1) isometry and present the first ...
Soumangsu Chakraborty, Pierre Heidmann
doaj   +1 more source

Black Holes and Solitons in String Theory [PDF]

, 1992
In this review, I discuss a general method for constructing classical solutions of the equations of motion arising in the effective low energy string theory, and discuss specific applications of this method.
Sen, Ashoke
core   +1 more source

Hawking Radiation in String Theory and the String Phase of Black Holes [PDF]

, 1999
The quantum string emission by Black Holes is computed in the framework of the `string analogue model' (or thermodynamical approach), which is well suited to combine QFT and string theory in curved backgrounds (particulary here, as black holes and ...
Medrano, M. Ramon, Sanchez, N.
core   +2 more sources