Results 31 to 40 of about 119,004,954 (182)

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

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

Habemus superstratum! A constructive proof of the existence of superstrata [PDF]

, 2015
We construct the first example of a superstratum: a class of smooth horizonless supergravity solutions that are parameterized by arbitrary continuous functions of (at least) two variables and have the same charges as the supersymmetric D1-D5-P black hole.
Bena Iosif, Warner, NP, Giusto, S, Shigemori, M, Giusto Stefano, Warner Nicholas P., Giusto, Stefano, Masaki Shigemori, Russo Rodolfo, Russo, R, Shigemori Masaki, Bena, Iosif, Iosif Bena, Bena, I, Warner, Nicholas P., Stefano Giusto, Rodolfo Russo, Russo, Rodolfo, Nicholas P. Warner, Shigemori, Masaki   +19 more
core   +1 more source

Non-supersymmetric F1-P black rings

Journal of High Energy Physics
We construct singly and doubly spinning non-supersymmetric F1–P black ring solutions in five-dimensional supergravity. These black rings have regular horizons and non-zero temperature.
Pavan Dharanipragada, Gurmeet Singh Punia, Amitabh Virmani   +2 more
doaj   +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

Dynamically and thermodynamically stable black holes in Einstein-Maxwell-dilaton gravity

Journal of High Energy Physics, 2020
We consider Einstein-Maxwell-dilaton gravity with the non-minimal exponential coupling between the dilaton and the Maxwell field emerging from low energy heterotic string theory.
Dumitru Astefanesei, Jose Luis Blázquez-Salcedo, Carlos Herdeiro, Eugen Radu, Nicolas Sanchis-Gual   +4 more
doaj   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

Advanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald, Hiroki Tomita, Giacomo Cotelli, Louka L. Brüll, Nanno G. de Rooij, Lucas R.L. Norg, Milo Clément, Reinder Coehoorn   +7 more
wiley   +1 more source

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

Ferrocene‐Based Self‐Assembled Monolayers Enable Ultra‐High Specific Detectivity in Perovskite Photodetectors

Advanced Materials, EarlyView.
We report perovskite photodetectors with record specific detectivities exceeding 1013 Jones with a novel molecular design strategy to functionalize self‐assembled monolayers (SAMs) with ferrocene (Fc) derivatives. Fc‐SAM‐based devices also exhibit strong operational stability and enable data transmission rates exceeding 1 Mbps in a LiFi system ...
Edoardo Angela, William D. J. Tremlett, Francesco Vanin, William J. O. Rodriguez Kazeem, Zhuoran Qiao, Davide Nodari, Francesco Furlan, Zonglong Zhu, Martyn A. McLachlan, Nicholas J. Long, Nicola Gasparini   +10 more
wiley   +1 more source

Signatures of black holes in string theory [PDF]

, 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 ...
Gürses, Metin
core   +1 more source