Results 11 to 20 of about 3,220,420 (230)

Data-driven molecular modeling with the generalized Langevin equation. [PDF]

J Comput Phys, 2020
Grogan F, Lei H, Li X, Baker NA.
europepmc   +3 more sources

On a fractional differential equation with fractional boundary conditions [PDF]

Mathematics and Computational Sciences, 2023
In this article, we study a new nonlinear Langevin equation of two fractional orders with fractional boundary value conditions which is a generalization of previous Langevin equations.
Yasser Khalili, Milad Yadollahzadeh
doaj   +1 more source

Quantum Liouvillian exceptional and diabolical points for bosonic fields with quadratic Hamiltonians: The Heisenberg-Langevin equation approach [PDF]

Quantum, 2022
Equivalent approaches to determine eigenfrequencies of the Liouvillians of open quantum systems are discussed using the solution of the Heisenberg-Langevin equations and the corresponding equations for operator moments.
Jan Peřina, A. Miranowicz, G. Chimczak, A. Kowalewska-Kudlaszyk   +3 more
semanticscholar   +1 more source

Relativistic Langevin equation derived from a particle-bath Lagrangian [PDF]

Journal of Physics A: Mathematical and Theoretical, 2021
We show how a relativistic Langevin equation can be derived from a Lorentz-covariant version of the Caldeira–Leggett particle-bath Lagrangian. In one of its limits, we identify the obtained equation with the Langevin equation used in contemporary ...
A. Petrosyan, A. Zaccone
semanticscholar   +1 more source

Kernel controlled real-time Complex Langevin simulation [PDF]

EPJ Web of Conferences, 2022
This study explores the utility of a kernel in complex Langevin simulations of quantum real-time dynamics on the Schwinger-Keldysh contour. We give several examples where we use a systematic scheme to find kernels that restore correct convergence of ...
Alvestad Daniel, Larsen Rasmus, Rothkopf Alexander   +2 more
doaj   +1 more source

Existence and uh-stability of integral boundary problem for a class of nonlinear higher-order Hadamard fractional Langevin equation via Mittag-Leffler functions

Filomat, 2023
The Langevin equation is a very important mathematical model in describing the random motion of particles. The fractional Langevin equation is a powerful tool in complex viscoelasticity.
Kaihong Zhao
semanticscholar   +1 more source

Stability of a Nonlinear ML-Nonsingular Kernel Fractional Langevin System with Distributed Lags and Integral Control

Axioms, 2022
The fractional Langevin equation has more advantages than its classical equation in representing the random motion of Brownian particles in complex viscoelastic fluid.
Kaihong Zhao
doaj   +1 more source

Existence, Stability and Simulation of a Class of Nonlinear Fractional Langevin Equations Involving Nonsingular Mittag–Leffler Kernel

Fractal and Fractional, 2022
The fractional Langevin equation is a very effective mathematical model for depicting the random motion of particles in complex viscous elastic liquids. This manuscript is mainly concerned with a class of nonlinear fractional Langevin equations involving
Kaihong Zhao
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

q-Fractional Langevin Differential Equation with q-Fractional Integral Conditions

Mathematics, 2023
The major goal of this manuscript is to investigate the existence, uniqueness, and stability of a q-fractional Langevin differential equation with q-fractional integral conditions.
Wuyang Wang, Khansa Hina Khalid, Akbar Zada, Sana Ben Moussa, Jun Ye   +4 more
doaj   +1 more source