Results 21 to 30 of about 69,875 (273)

Black holes and black strings of N=2, d=5 supergravity in the H-FGK formalism [PDF]

, 2012
We study general classes and properties of extremal and non-extremal static black-hole solutions of N=2, d=5 supergravity coupled to vector multiplets using the recently proposed H-FGK formalism, which we also extend to static black strings.
A Antonio Martın de, A Castro, A Ceresole, A Ceresole, A Strominger, A Strominger, AH Chamseddine, B Janssen, C. S. Shahbazi, CM Miller, F Larsen, G Bossard, G Lopes Cardoso, GT Horowitz, I Antoniadis, I Gaida, I Gaida, J Bellorín, J Bellorín, J Bellorín, J Perz, Jan Perz, JB Gutowski, JB Gutowski, JP Gauntlett, JP Gauntlett, K Goldstein, L Andrianopoli, M Cvetič, M Cvetič, M Cvetič, M Cvetič, M Cvetič, M Günaydin, M Günaydin, M Günaydin, M Hübscher, M Hübscher, M Hübscher, P Galli, P Galli, P Meessen, P Meessen, P Meessen, P Meessen, Patrick Meessen, R Kallosh, RR Khuri, S Ferrara, S Ferrara, S Ferrara, S Ferrara, T Mohaupt, T Mohaupt, T Mohaupt, T Mohaupt, T Ortín, T Ortín, Tomás Ortín   +58 more
core   +2 more sources

On the Growth of Solutions of Second Order Linear Complex Differential Equations whose Coefficients Satisfy Certain Conditions

مجلة بغداد للعلوم, 2020
In this paper, we study the growth of solutions of the second order linear complex differential equations  insuring that any nontrivial solutions are of infinite order.
ayad alkhalidy, Eman Hussein
doaj   +1 more source

Energy loss at zero temperature from extremal black holes

European Physical Journal C: Particles and Fields, 2018
Using the AdS/CFT correspondence, we probe the extremal black holes by studying the energy loss of a moving heavy point particle in a strongly-coupled boundary field theory at zero temperature and finite charge density. We first consider the extremal AdS-
Moslem Ahmadvand, Kazem Bitaghsir Fadafan   +1 more
doaj   +1 more source

Gradient flow of Einstein-Maxwell theory and Reissner-Nordström black holes

Journal of High Energy Physics, 2023
Ricci flow is a natural gradient flow of the Einstein-Hilbert action. Here we consider the analog for the Einstein-Maxwell action, which gives Ricci flow with a stress tensor contribution coupled to a Yang-Mills flow for the Maxwell field.
Davide De Biasio, Julian Freigang, Dieter Lüst, Toby Wiseman   +3 more
doaj   +1 more source

Extremal Solutions of Functional Differential Inclusions

Journal of Mathematical Analysis and Applications, 1993
Let \(X\) be a separable Banach space; \({\mathcal K}\subset X\) be a cone and \(v: [-\tau,a]\to X\) be a solution of a problem \(\dot v(t)\in F(t,v_ t)+{\mathcal K}\), \(t\in [0,a]\); \(v_ 0\geq\varphi\), where \(F\) is a Carathéodory type multifunction with convex closed values satisfying the Ambrosetti type regularity condition. The viability result
Hu, S.C., Lakshmikantham, V., Papageorgiou, N.   +2 more
openaire   +2 more sources

Exact solutions for extreme black hole magnetospheres [PDF]

Journal of High Energy Physics, 2015
We present new exact solutions of Force-Free Electrodynamics (FFE) in the Near-Horizon region of an Extremal Kerr black hole (NHEK) and offer a complete classification of the subset that form highest-weight representations of the spacetime's SL(2,R) x U(1) isometry group.
Lupsasca, Alexandru, Rodriguez, Maria
openaire   +3 more sources

Non-extremal, α′-corrected black holes in 5-dimensional heterotic superstring theory

Journal of High Energy Physics, 2022
We compute the first-order α′ corrections of the non-extremal Strominger-Vafa black hole and its non-supersymmetric counterparts in the framework of the Bergshoeff-de Roo formulation of the heterotic superstring effective action.
Pablo A. Cano, Tomás Ortín, Alejandro Ruipérez, Matteo Zatti   +3 more
doaj   +1 more source

Solution of Extremely Large Integral-Equation Problems [PDF]

2007 International Conference on Electromagnetics in Advanced Applications, 2007
We report the solution of extremely large integral-equation problems involving electromagnetic scattering from conducting bodies. By orchestrating diverse activities, such as the multilevel fast multipole algorithm, iterative methods, preconditioning techniques, and parallelization, we are able to solve scattering problems that are discretized with ...
Ergül, Özgür, Malas, Tahir, Gürel, Levent   +2 more
openaire   +2 more sources

On the geodesics for a spherically symmetric dilaton black hole [PDF]

Serbian Astronomical Journal, 1998
In this paper we shall investigate the timelike geodesics for an extremal, spherically symmetric, massless dilaton black hole, using an exact solution obtained by Gary Horowitz.
Blaga C., Blaga P.A.
doaj   +1 more source

From rotating to charged black holes and back again

Journal of High Energy Physics, 2022
The mild form of the Weak Gravity Conjecture (WGC) requires higher derivative corrections to extremal charged black holes to increase their charge-to-mass ratio. This allows decay via emission of a smaller extremal black hole.
Lars Aalsma, Gary Shiu
doaj   +1 more source