Results 41 to 50 of about 2,133 (160)

The Tensor Pade´-Type Approximant with Application in Computing Tensor Exponential Function

Journal of Function Spaces, 2018
Tensor exponential function is an important function that is widely used. In this paper, tensor Pade´-type approximant (TPTA) is defined by introducing a generalized linear functional for the first time.
Chuanqing Gu, Yong Liu
doaj   +1 more source

Quantum Dust Cores of Black Holes and Their Quasi‐Normal Modes

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
We investigate the quasi‐normal mode spectrum of a gravitationally collapsed ball of dust, considering both a linear and a refined parabolic effective mass function for the quantum core. Furthermore, we account for the quantum leakage of dust particles outside the horizon.
T. Bambagiotti, L. Gallerani, A. Mentrelli, A. Giusti, R. Casadio   +4 more
wiley   +1 more source

Multiderivative methods for linear second order boundary value prob1ems [PDF]

, 1985
Second, fourth and sixth order methods are developed and analysed for the numerical solution of linear second order boundary value problems. The methods are developed by replacing the exponential terms in a three—point recurrence relation by Padé ...
Tirmizi, S I A, Twizell, E H
core   +1 more source

Pseudo-epsilon expansion and the two-dimensional Ising model

, 2005
Starting from the five-loop renormalization-group expansions for the two-dimensional Euclidean scalar \phi^4 field theory (field-theoretical version of two-dimensional Ising model), pseudo-\epsilon expansions for the Wilson fixed point coordinate g ...
A. I. Sokolov, A. I. Sokolov, A. I. Sokolov, A. I. Sokolov, A. I. Sokolov, A. Pelissetto, A. Pelissetto, B. N. Shalaev, B. Nienhuis, E. V. Orlov, G. A. Baker Jr., J. C. Guillou Le, J. C. Guillou Le, L. P. Kadanoff, M. Caselle, R. Guida, S. A. Antonenko, S. L. Zinn, Th. Neimeyer, Yu. Holovatch   +19 more
core   +1 more source

A New Padé Approach to Modeling Wormholes in Dekel‐Zhao Dark Matter Halos

Annalen der Physik, Volume 538, Issue 3, March 2026.
A matter‐first Padé strategy is introduced to build traversable wormholes from prescribed dark‐matter halos. Rational Padé fits approximately the Dekel–Zhao density and are analytically integrated to obtain a shape function that exactly reproduces the intended matter content, avoiding spurious poles of geometry‐first schemes.
Jonathan Alves Rebouças, Francisco Tiago Barboza Sampaio, Francisco Bento Lustosa, Leonardo Tavares de Oliveira, C. R. Muniz   +4 more
wiley   +1 more source

Modified differential transform method for solving linear and nonlinear pantograph type of differential and Volterra integro-differential equations with proportional delays

Advances in Difference Equations, 2020
In this study, a hybrid technique for improving the differential transform method (DTM), namely the modified differential transform method (MDTM) expressed as a combination of the differential transform method, Laplace transforms, and the Padé ...
Seyyedeh Roodabeh Moosavi Noori, Nasir Taghizadeh   +1 more
doaj   +1 more source

Chiral Magnetic Effect in the Anisotropic Quark-Gluon Plasma [PDF]

, 2015
An anisotropic thermal plasma phase of a strongly coupled gauge theory can be holographically modelled by an anisotropic AdS black hole. The temperature and anisotropy parameter of the AdS black hole background of interest [1] is specified by the ...
Ali-Akbari, Mohammad, Taghavi, Seyed Farid   +1 more
core   +2 more sources

Quasinormal Modes for Coherent Quantum Black Holes

Fortschritte der Physik, Volume 74, Issue 3, March 2026.
ABSTRACT Coherent quantum black holes are quantum geometries obtained by means of a mean‐field‐like approach to the gravitational interaction. This procedure attenuates the classical spacetime singularities of general relativity by replacing them with integrable singularities in the quantum‐corrected geometry. After discussing some relevant observables
Tommaso Antonelli, Andrea Giusti, Roberto Casadio, Lavinia Heisenberg   +3 more
wiley   +1 more source

S-duality resurgence in SL(2) Chern-Simons theory

, 2017
We find that an S-duality in SL(2) Chern-Simons theory for hyperbolic 3-manifolds emerges by the Borel resummation of a semiclassical expansion around a particular flat connection associated to the hyperbolic structure. We demonstrate it numerically with
Gang, Dongmin, Hatsuda, Yasuyuki
core   +1 more source

Matrix‐Free Methods for Finite‐Strain Elasticity: Automatic Code Generation With No Performance Overhead

International Journal for Numerical Methods in Engineering, Volume 126, Issue 22, 30 November 2025.
ABSTRACT This study explores matrix‐free tangent evaluations in finite‐strain elasticity with the use of automatically generated code for the quadrature‐point level calculations. The code generation is done via automatic differentiation (AD) with AceGen.
Michał Wichrowski, Mohsen Rezaee‐Hajidehi, Jože Korelc, Martin Kronbichler, Stanisław Stupkiewicz   +4 more
wiley   +1 more source