Results 61 to 70 of about 2,678,069 (257)

High energy scattering and string/black hole transition [PDF]

open access: yesarXiv, 2022
We give a short review of high energy scattering in string theory, thermal properties of strings, explain the connection between the two and how they all tie together with the string/black hole transition.
arxiv  

Exact Three Dimensional Black Holes in String Theory [PDF]

open access: yesPhys.Rev.Lett.71:328-331,1993, 1993
A black hole solution to three dimensional general relativity with a negative cosmological constant has recently been found. We show that a slight modification of this solution yields an exact solution to string theory. This black hole is equivalent (under duality) to the previously discussed three dimensional black string solution.
arxiv   +1 more source

Black Hole Solutions of Kaluza-Klein Supergravity Theories and String Theory [PDF]

open access: yesClass.Quant.Grav.15:775-785,1998, 1995
We find U(1)_{E} \times U(1)_{M} non-extremal black hole solutions of 6-dimensional Kaluza-Klein supergravity theories. Extremal solutions were found by Cveti\v{c} and Youm\cite{C-Y}. Multi black hole solutions are also presented. After electro-magnetic duality transformation is performed, these multi black hole solutions are mapped into the the exact ...
arxiv   +1 more source

Kaluza-Klein Black Holes in String Theory [PDF]

open access: yes, 2000
Non-supersymmetric black holes carrying both electric and magnetic charge with respect to a single Kaluza-Klein gauge field have much in common with supersymmetric black holes.
Larsen, Finn
core   +2 more sources

Black Hole Entropy in String Theory [PDF]

open access: yes, 2020
In the first part of the thesis we examine the entropy of black strings in compactifications of F-theory on an elliptically fibered Calabi-Yau threefold or of type IIB string theory on K3. The black strings arise as D3-branes wrapped on a curve in either the base of the Calabi-Yau threefold or in K3 and when compactified on an additional circle, they ...
openaire   +4 more sources

Extremal Black Holes as Bound States [PDF]

open access: yes, 1995
We consider a simple static extremal multi-black hole solution with constituents charged under different $U(1)$ fields. Each of the constituents by itself is an extremal dilatonic black hole of coupling $a=\srt$.
Rahmfeld, J.
core   +4 more sources

On small black holes in string theory

open access: yesJournal of High Energy Physics
Abstract We discuss the worldsheet sigma-model whose target space is the d+1 dimensional Euclidean Schwarzschild black hole. We argue that in the limit where the Hawking temperature of the black hole, T, approaches the Hagedorn temperature, TH, it can be described in terms of a generalized version of the Horowitz-Polchinski ...
Balthazar, Bruno   +2 more
openaire   +3 more sources

Black holes in string theory

open access: yesNuclear Physics B, 1989
The field equations, which emerge from string theory, are solved to leading order in α′ for the case of black hole space-times. We show how the results fit into a broader outlook on string theory and quantum gravity. In particular, it seems that string theory could cure some of the paradoxes associated with black hole evaporation.
Robert C. Myers   +2 more
openaire   +2 more sources

Massage‐Mimicking Nanosheets Mechanically Reorganize Inter‐organelle Contacts to Restore Mitochondrial Functions in Parkinson's Disease

open access: yesAdvanced Science, EarlyView.
Parkinson's disease (PD) progression is aggravated by disrupted inter‐organelle contacts, which are influenced by mechanical forces. NanoMassage, 200 nm PEGylated black phosphorus nanosheets, deliver targeted mechanical stimulation to neural cells.
Tianqi Li   +12 more
wiley   +1 more source

O(n, n) invariance and Wald entropy formula in the Heterotic Superstring effective action at first order in α′

open access: yesJournal of High Energy Physics, 2021
We perform the toroidal compactification of the full Bergshoeff-de Roo version of the Heterotic Superstring effective action to first order in α′. The dimensionally-reduced action is given in a manifestly-O(n, n)-invariant form which we use to derive a ...
Tomás Ortín
doaj   +1 more source

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