Results 21 to 30 of about 2,678,069 (257)

Kaluza-Klein Black Holes in String Theory [PDF]

Physical Review D, 1993
Exact solutions of heterotic string theory corresponding to four-dimensional magnetic black holes in $N=4$ supergravity are described. The solutions describe the black holes in the throat limit, and consist of a tensor product of an $SU(2)$ WZW orbifold ...
A. H. Chamseddine, A. Sevrin, A. Strominger, C. Callan, C. G. Callan, D. Garfinkle, D. Garfinkle, D. Gepner, E. Witten, G. W. Gibbons, H. Braden, I. Bars, J. Maharana, R. Kallosh, S. B. Giddings, S. B. Giddings, T. Banks, William Nelson   +17 more
core   +5 more sources

String Theory Effects on Five-Dimensional Black Hole Physics [PDF]

, 2008
We review recent developments in understanding quantum/string corrections to BPS black holes and strings in five-dimensional supergravity. These objects are solutions to the effective action obtained from M-theory compactified on a Calabi-Yau threefold ...
ALEJANDRA CASTRO, Alishahiha M., Behrndt K., Bergshoeff E., Bergshoeff E., Castro A., Castro A., Castro A., Cvitan M., Dabholkar A., Dabholkar A., Dabholkar A., Dabholkar A., David J. R., Elvang H., Exirifard G., Exirifard G., FINN LARSEN, Gaiotto D., Gaiotto D., Gaiotto D., Giveon A., Goldstein K., Guica M., Gutowski J. B., Gutowski J. B., Harvey J. A., Hubeny V., Iizuka N., JOSHUA L. DAVIS, Kraus P., Kraus P., Kraus P., Lopes Cardoso G., Lopes Cardoso G., Maldacena J. M., PER KRAUS, Sahoo B., Sahoo B., Sen A., Sen A., Sen A., Tripathy P. K.   +42 more
core   +3 more sources

A stringy effect on Hawking radiation

Journal of High Energy Physics, 2023
In string theories, interactions are exponentially suppressed for trans-Planckian space-like external momenta. We study a class of quantum field theories that exhibit this feature modeled after Witten’s bosonic open string field theory, and discover a ...
Pei-Ming Ho, Yosuke Imamura, Hikaru Kawai, Wei-Hsiang Shao   +3 more
doaj   +1 more source

Spontaneous scalarization in (A)dS gravity at zero temperature

Journal of High Energy Physics, 2022
We study spontaneous scalarization of electrically charged extremal black holes in D ≥ 4 spacetime dimensions. Such a phenomenon is caused by the symmetry breaking due to quartic interactions of the scalar — Higgs potential and Stueckelberg interaction ...
Alessio Marrani, Olivera Miskovic, Paula Quezada Leon   +2 more
doaj   +1 more source

α′-corrected black holes in String Theory [PDF]

Journal of High Energy Physics, 2018
Abstract We consider the well-known solution of the Heterotic Superstring effective action to zeroth order in α ′ that describes the intersection of a fundamental string with momentum and a solitonic 5-brane and which gives a 3-charge, static, extremal, supersymmetric black hole in 5 dimensions upon dimensional ...
Pedro F. Ramírez, Pablo A. Cano, Pablo A. Cano, Tomás Ortín, Patrick Meessen   +4 more
openaire   +6 more sources

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

On the evaporation of black holes in string theory [PDF]

Physics Letters B, 1992
We show that, in string theory, the quantum evaporation and decay of black holes in two-dimensional target space is related to imaginary parts in higher-genus string amplitudes. These arise from the regularisation of modular infinities due to the sum over world-sheet configurations, that are known to express the instabilities of massive string states ...
Dimitri V. Nanopoulos, Dimitri V. Nanopoulos, John Ellis, Nikolaos Mavromatos   +3 more
openaire   +4 more sources

Experiment regarding magnetic fields with gravity

IET Quantum Communication, Volume 3, Issue 4, Page 218-228, December 2022., 2022
Abstract This experiment was designed to test the string theory as a physical reality. The ground‐based device placed the N poles of the magnets upwards, north, south, east, and west. Coil Ass'Y was placed between 2 N poles with bearing covers on the top and bottom.
Jong Hoon Lee
wiley   +1 more source

An entropy current for dynamical black holes in four-derivative theories of gravity

Journal of High Energy Physics, 2020
We propose an entropy current for dynamical black holes in a theory with arbitrary four derivative corrections to Einstein’s gravity, linearized around a stationary black hole.
Jyotirmoy Bhattacharya, Sayantani Bhattacharyya, Anirban Dinda, Nilay Kundu   +3 more
doaj   +1 more source

The multipolar structure of fuzzballs

Journal of High Energy Physics, 2021
We extend and refine a general method to extract the multipole moments of arbitrary stationary spacetimes and apply it to the study of a large family of regular horizonless solutions to N $$ \mathcal{N} $$ = 2 four-dimensional supergravity coupled to ...
Massimo Bianchi, Dario Consoli, Alfredo Grillo, Josè Francisco Morales, Paolo Pani, Guilherme Raposo   +5 more
doaj   +1 more source