Results 21 to 30 of about 115,140,986 (222)

BLACK HOLE GEOMETRIES IN NONCOMMUTATIVE STRING THEORY [PDF]

International Journal of Modern Physics A, 2006
We obtain a generalized Schwarzschild (GS) and a generalized Reissner–Nordstrom (GRN) black hole geometries in 3+1 dimensions, in a noncommutative string theory. In particular, we consider an effective theory of gravity on a curved D3-brane in presence of an electromagnetic (EM) field.
Kar, Supriya, Majumdar, Sumit
openaire   +2 more sources

STRING THEORY ON THREE-DIMENSIONAL BLACK HOLES [PDF]

International Journal of Modern Physics A, 1998
We investigate the string theory on three-dimensional black holes discovered by Bañados, Teitelboim and Zanelli in the framework of conformal field theory. The model is described by an orbifold of the [Formula: see text] WZW model. The spectrum is analyzed by solving the level matching condition and we obtain winding modes.
Natsuume, Makoto, Satoh, Yuji
openaire   +2 more sources

Comments on black holes in string theory [PDF]

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

Four-dimensional black holes in string theory [PDF]

Physical Review D, 1993
37 pages + 1 figure (tar compressed and uuencoded)
Giddings, S. B., Polchinski, J., Strominger, A.   +2 more
openaire   +3 more sources

Extremal black hole horizons

Journal of High Energy Physics, 2018
Using the blackfold effective theory applied to extremal Kerr branes we provide evidence for the existence of new stationary extremal black hole solutions in asymptotically flat spacetime with both single and multiple disconnected horizons. These include
Jay Armas, Troels Harmark, Niels A. Obers   +2 more
doaj   +1 more source

Islands in Schwarzschild black holes

Journal of High Energy Physics, 2020
We study the Page curve for asymptotically flat eternal Schwarzschild black holes in four and higher spacetime dimensions. Before the Page time, the entanglement entropy grows linearly in time.
Koji Hashimoto, Norihiro Iizuka, Yoshinori Matsuo   +2 more
doaj   +1 more source

Aspects of Topological String Theory [PDF]

, 2008
Two aspects of the topological string and its applications are considered in this thesis. Firstly, non-perturbative contributions to the OSV conjecture relating four-dimensional extremal black holes and the closed topological string partition function ...
Cook, Paul Langabi Hogan
core   +1 more source

Geroch group description of bubbling geometries

Journal of High Energy Physics, 2018
The Riemann-Hilbert approach to studying solutions of supergravity theories allows us to associate spacetime independent monodromy matrices (matrices in the Geroch group) with solutions that effectively only depend on two spacetime coordinates.
Pratik Roy, Amitabh Virmani
doaj   +1 more source

Asymptotic quasinormal modes of string-theoretical d-dimensional black holes

Journal of High Energy Physics, 2021
We compute the quasinormal frequencies of d-dimensional spherically symmetric black holes with leading string α′ corrections for tensorial gravitational perturbations in the highly damped regime.
Filipe Moura, João Rodrigues
doaj   +1 more source

Signatures of black holes in string theory [PDF]

Physical Review D, 1992
The effect of string theory on the four-dimensional classical Einstein equations is investigated. It is shown that the throats of nonrotating charged black holes are exact solutions of the gravitational field equations with string correction terms.
openaire   +4 more sources