Results 1 to 10 of about 94,854 (144)

Data-driven parameterization of the generalized Langevin equation

Proceedings of the National Academy of Sciences of the United States of America, 2016
We present a data-driven approach to determine the memory kernel and random noise in generalized Langevin equations. To facilitate practical implementations, we parameterize the kernel function in the Laplace domain by a rational function, with ...
Huan Lei, Nathan A Baker, Xiantao Li
exaly   +3 more sources

Complex Langevin dynamics and supersymmetric quantum mechanics

Journal of High Energy Physics, 2021
Using complex Langevin method we probe the possibility of dynamical supersymmetry breaking in supersymmetric quantum mechanics models with complex actions.
Anosh Joseph, Arpith Kumar
doaj   +1 more source

Particle size and its distribution deduced from magnetic properties of magnetite nanoparticles by the modified Langevin equation

AIP Advances, 2023
The magnetic hysteresis curve can provide information about magnetic properties, particle size, and its distribution. For superparamagnetic materials, the characteristics of the hysteresis curve are very typical, that is, Hc is equal to zero with a ...
Togar Saragi, Utami Widyaiswari, Darling Josua Manalu, Budi Adiperdana, Risdiana Risdiana, Tadashi Adachi   +5 more
doaj   +1 more source

On the anhysteretic magnetization of soft magnetic materials

AIP Advances, 2022
Electrical steels are still the materials of choice for large-scale transformers and most electric motors. Yet, they may present a nonhomogeneous magnetic nature which prevents describing accurately their anhysteretic magnetization with the Langevin ...
Josefina María Silveyra, Juan Manuel Conde Garrido   +1 more
doaj   +1 more source

On a class of Langevin equations in the frame of Caputo function-dependent-kernel fractional derivatives with antiperiodic boundary conditions

AIMS Mathematics, 2021
In this manuscript, we consider a class of nonlinear Langevin equations involving two different fractional orders in the frame of Caputo fractional derivative with respect to another monotonic function ϑ with antiperiodic boundary conditions.
Abdelatif Boutiara, Mohammed S. Abdo, Manar A. Alqudah, Thabet Abdeljawad   +3 more
doaj   +1 more source

Existence and stability analysis for Caputo generalized hybrid Langevin differential systems involving three-point boundary conditions

Boundary Value Problems, 2023
This research inscription gets to grips with two novel varieties of boundary value problems. One of them is a hybrid Langevin fractional differential equation, whilst the other is a coupled system of hybrid Langevin differential equation encapsuling a ...
A. Boutiara, Mohammed M. Matar, Thabet Abdeljawad, Fahd Jarad   +3 more
doaj   +1 more source

Complex Langevin study for polarons in a one-dimensional two-component Fermi gas with attractive contact interactions

Physical Review Research, 2021
We investigate a polaronic excitation in a one-dimensional spin-1/2 Fermi gas with contact attractive interactions, using the complex Langevin method, which is a promising approach to evade a possible sign problem in quantum Monte Carlo simulations.
Takahiro M. Doi, Hiroyuki Tajima, Shoichiro Tsutsui   +2 more
doaj   +1 more source

A mean field approach to analyze the magnetization of interacting ferrimagnetic particles under superparamagnetic conditions [PDF]

AIP Advances
Nanoparticles of magnetite are synthesized. A part of these particles are covered with oleic acid. Both, the bare and the covered, samples are characterized by x-ray diffractometry, transmission electron microscopy, Fourier transform infrared ...
Shubham Rajput, S. D. Tiwari
doaj   +1 more source

A new algorithm of Langevin simulation and its application to the SU(2) and SU(3) lattice gauge [PDF]

, 1997
The 2nd order Runge-Kutta scheme Langevin simulation of unquenched QCD in pseudofermion method derived from our general theory shows a behaviour as a function of the Langevin step t better than the Fukugita,Oyanagi,Ukawa's scheme.Comment: Talk given at ...
Batrouni, Cabibbo, Degrand, Drummond, Fukugita, Gupta, Hideo Nakajima, Jansen, Nakajima, Nakajima, Sadataka Furui, Ukawa   +11 more
core   +3 more sources

A new analytic solution of complex Langevin differential equations [PDF]

Arab Journal of Mathematical Sciences, 2023
Purpose – In this study, the authors introduce a solvability of special type of Langevin differential equations (LDEs) in virtue of geometric function theory.
Rabha W. Ibrahim
doaj   +1 more source