Results 21 to 30 of about 2,763,716 (303)

Squashed, magnetized black holes in D = 5 minimal gauged supergravity

open access: yesJournal of High Energy Physics, 2018
We construct a new class of black hole solutions in five-dimensional Einstein-Maxwell-Chern-Simons theory with a negative cosmological constant. These configurations are cohomogeneity-1, with two equal-magnitude angular momenta. In the generic case, they
Jose Luis Blázquez-Salcedo   +3 more
doaj   +1 more source

Extremal behavior of stochastic volatility models [PDF]

open access: yes, 2005
Empirical volatility changes in time and exhibits tails, which are heavier than normal. Moreover, empirical volatility has - sometimes quite substantial - upwards jumps and clusters on high levels.
Lindner, Alexander M.   +7 more
core   +1 more source

Upper and lower solution method for Hilfer fractional evolution equations with nonlocal conditions

open access: yesBoundary Value Problems, 2019
This paper is concerned with the existence of extremal mild solutions for Hilfer fractional evolution equations with nonlocal conditions in an ordered Banach space E.
Haide Gou, Yongxiang Li
doaj   +1 more source

The extremal algebra on two hermitians with square 1 [PDF]

open access: yes, 2002
Let Ea(u,v) be the extremal algebra determined by two hermitians u and v with u2 = v2 = 1. We show that: Ea(u,v) = {f=gu:f,g ε C(T)}, where T is the unit circle; Ea(u,v) is C*-equivelant to C*(G), where G is the infinite dihedral group; most of the
Duncan, J., Crabb, M.J., McGregor, C.M.
core   +1 more source

A functional integral inclusion involving Carathéodories

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2003
In this paper the existence of extremal solutions of a functional integral inclusion involving Carathéodory is proved under certain monotonicity conditions.
Bapurao Dhage
doaj   +1 more source

Monotone Iterative Technique for Conformable Fractional Differential Equations with Deviating Arguments

open access: yesDiscrete Dynamics in Nature and Society, 2020
This paper is concerned with the existence of extremal solutions for periodic boundary value problems for conformable fractional differential equations with deviating arguments.
Huiling Chen, Shuman Meng, Yujun Cui
doaj   +1 more source

From rotating to charged black holes and back again

open access: yesJournal 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

Extremal Solutions for a Class of Unilateral Problems

open access: yesZeitschrift für Analysis und ihre Anwendungen, 2002
We apply a fixed point theorem for increasing operators in ordered Banach spaces to prove the existence of extremal (i.e. maximal or minimal) solutions for the variational inequality \langle Av, w – v\rangle ≥ \int _\Omega f(x, v)(w–v)dx where A
Huy, N. B., Thanh, N. D., Thanh, T. D.
openaire   +2 more sources

Extremal Black Holes as Exact String Solutions [PDF]

open access: yesPhysical Review Letters, 1994
13 pages, harvmac, Imperial/TP/93-94/51, UCSBTH-94-24 (references added)
Horowitz, Gary T., Tseytlin, A. A.
openaire   +3 more sources

Exactly solvable gravitating perfect fluid solitons in (2 + 1) dimensions

open access: yesJournal of High Energy Physics, 2018
The Bogomolnyi-Prasad-Sommerfield (BPS) baby Skyrme model coupled to gravity is considered. We show that in an asymptotically flat space-time the model still possesses the BPS property, i.e., admits a BPS reduction to first order Bogomolnyi equations ...
C. Adam   +3 more
doaj   +1 more source

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