Results 11 to 20 of about 2,600,382 (231)
On the black hole interior in string theory [PDF]
Journal of High Energy Physics, 2017 The potential behind the horizon of an eternal black hole in classical theories is described in terms of data that is available to an external observer — the reflection coefficient of a wave that scatters on the black hole.
Roy Ben-Israel +3 more
doaj +4 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 +3 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 +4 more
openaire +6 more sources
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 +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 +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 +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 +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 +5 more
doaj +1 more source
Separability of black holes in string theory [PDF]
Journal of High Energy Physics, 2012 We analyze the origin of separability for rotating black holes in string theory, considering both massless and massive geodesic equations as well as the corresponding wave equations. We construct a conformal Killing-Stackel tensor for a general class of black holes with four independent charges, then identify two-charge configurations where enhancement
Finn Larsen, Cynthia Keeler
openaire +3 more sources