Analysis of the L1 scheme for a time fractional parabolic–elliptic problem involving weak singularity
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DOI: 10.1002/mma.6850
Abstract: A time fractional initial boundary value problem of mixed parabolic–elliptic type is considered. The domain of such problem is divided into two subdomains. A reaction–diffusion parabolic problem is considered on the first domain, and on… read more here.
Keywords: time; parabolic elliptic; problem; singularity ... See more keywords
A simple holographic scenario for gapped quenches
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DOI: 10.1007/jhep02(2017)130
Abstract: A bstractWe construct gravitational backgrounds dual to a family of field theories parameterized by a relevant coupling. They combine a non-trivial scalar field profile with a naked singularity. The naked singularity is necessary to preserve… read more here.
Keywords: field; simple holographic; singularity; holographic scenario ... See more keywords
Kalb-Ramond field, black holes and black strings in (2 + 1)D
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DOI: 10.1007/jhep08(2025)135
Abstract: New rotating dilaton black hole and black string solutions in three spacetime dimensions are obtained. The solutions are asymptotically flat and, they are exact in classical string theory. The black hole solutions have only a… read more here.
Keywords: ramond field; black hole; kalb ramond; singularity ... See more keywords
Black hole singularity from OPE
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DOI: 10.1007/jhep10(2024)105
Abstract: Eternal asymptotically AdS black holes are dual to thermofield double states in the boundary CFT. It has long been known that black hole singularities have certain signatures in boundary thermal two-point functions related to null… read more here.
Keywords: stress tensor; singularity; black hole; hole singularity ... See more keywords
Rank defect analysis and the realization of proper singularity in normal equations of geodetic networks
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DOI: 10.1007/s00190-016-0989-3
Abstract: The singularity of input normal equations (NEQ) is a crucial element for their optimal handling in the context of terrestrial reference frame (TRF) estimation under the minimal-constraint framework. However, this element is often missing in… read more here.
Keywords: rank defect; realization proper; singularity; analysis realization ... See more keywords
The Initial Stages of a Generic Singularity for a 2D Pressureless Gas
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DOI: 10.1007/s00220-025-05472-6
Abstract: We consider the Cauchy problem for the equations of pressureless gases in two space dimensions. For a generic set of smooth initial data (density and velocity), it is known that the solution loses regularity at… read more here.
Keywords: singularity pressureless; generic singularity; initial stages; singularity ... See more keywords
Three-dimensional electric potential induced by a point singularity in a multilayered dielectric medium
Sign Up to like & getrecommendations! Published in 2019 at "Applied Mathematics and Mechanics"
DOI: 10.1007/s10483-019-2519-9
Abstract: A simple and effective method is proposed to derive the three-dimensional electric potential induced by a point singularity of any type in an N-phase dielectric medium composed of N−2 intermediate dielectric layers of equal thickness… read more here.
Keywords: medium; point singularity; dimensional electric; singularity ... See more keywords
Accurate quadrature of nearly singular line integrals in two and three dimensions by singularity swapping
Sign Up to like & getrecommendations! Published in 2019 at "BIT Numerical Mathematics"
DOI: 10.1007/s10543-020-00820-5
Abstract: The numerical method of Helsing and co-workers evaluates Laplace and related layer potentials generated by a panel (composite) quadrature on a curve, efficiently and with high-order accuracy for arbitrarily close targets. Since it exploits complex… read more here.
Keywords: singular line; quadrature; singularity; quadrature nearly ... See more keywords
A singularity removal method for coupled 1D–3D flow models
Sign Up to like & getrecommendations! Published in 2019 at "Computational Geosciences"
DOI: 10.1007/s10596-019-09899-4
Abstract: In reservoir simulations, the radius of a well is inevitably going to be small compared to the horizontal length scale of the reservoir. For this reason, wells are typically modelled as lower-dimensional sources. In this… read more here.
Keywords: coupled flow; reservoir; singularity removal; method ... See more keywords
Formation of singularity and apparent horizon for dissipative collapse in f(R, T) theory of gravity
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DOI: 10.1007/s10714-025-03379-0
Abstract: In this paper, we consider the spherically symmetric gravitational collapse of isotropic matter undergoing dissipation in the form of heat flux, with a generalized Vaidya exterior, in the context of f(R, T) gravity. Choosing f(R,T)=R+2λT\documentclass[12pt]{minimal}… read more here.
Keywords: singularity; apparent horizon; gravity; collapse ... See more keywords
The Production of FRW Universe and Decay to Particles in Multiverse
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DOI: 10.1007/s10773-017-3437-0
Abstract: In this study, first, it will be shown that as the Hubble parameter, “H”, increases the production cross section for closed and flat Universes increases rapidly at smaller values of “H” and becomes constant for… read more here.
Keywords: production cross; section; cross section; singularity ... See more keywords