Results 81 to 90 of about 3,220,420 (230)

Stochastic Quantization for Complex Actions

open access: yes, 2008
We use the stochastic quantization method to study systems with complex valued path integral weights. We assume a Langevin equation with a memory kernel and Einstein's relations with colored noise.
Menezes, G., Svaiter, N. F.
core   +1 more source

Fission widths of hot nuclei from Langevin dynamics [PDF]

open access: yes, 2001
Fission dynamics of excited nuclei is studied in the framework of Langevin equation. The one body wall-and-window friction is used as the dissipative force in the Langevin equation.
A.J. Sierk   +28 more
core   +2 more sources

Langevin equation involving one fractional order with three-point boundary conditions

open access: yesJournal of Nonlinear Science and its Applications, 2019
In this paper, we investigate a class of nonlinear Langevin equation involving one fractional order α ∈ (0, 1] with three-point boundary conditions. By the Banach contraction principle and Krasnoselskii’s fixed point theorem, the existence and uniqueness
A. Salem   +2 more
semanticscholar   +1 more source

Control of Quantum Langevin Equations [PDF]

open access: yesOpen Systems & Information Dynamics, 2003
The problem of controlling quantum stochastic evolutions arises naturally in several different fields such as quantum chemistry, quantum information theory, quantum engineering, etc. In this paper, we apply the recently discovered closed form of the unitarity conditions for stochastic evolutions driven by the square of white noise [9] to solve this ...
ACCARDI, LUIGI, Bouaks, A.
openaire   +3 more sources

A Unified Approach to Solvability and Stability of Multipoint BVPs for Langevin and Sturm–Liouville Equations with CH–Fractional Derivatives and Impulses via Coincidence Theory

open access: yesFractal and Fractional
The Langevin equation is a model for describing Brownian motion, while the Sturm–Liouville equation is an important mechanical model. This paper focuses on the solvability and stability of nonlinear impulsive Langevin and Sturm–Liouville equations with ...
Kaihong Zhao, Juqing Liu, Xiaojun Lv
doaj   +1 more source

Large deviations conditioned on large deviations I: Markov chain and Langevin equation [PDF]

open access: yesJournal of statistical physics, 2018
We present a systematic analysis of stochastic processes conditioned on an empirical observable QT\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs}
B. Derrida, Tridib Sadhu
semanticscholar   +1 more source

On the quantum langevin equation [PDF]

open access: yesJournal of Statistical Physics, 1987
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ford, G. W., Kac, M.
openaire   +3 more sources

Stability analysis of a class of Langevin equations in the frame of generalized Caputo fractional operator with nonlocal boundary conditions

open access: yesBoundary Value Problems
The main objective of the present paper is to establish the existence and uniqueness of solutions for the fractional Langevin equation involving the ϕ-Caputo fractional operator with nonlocal boundary conditions.
Sombir Dhaniya   +3 more
doaj   +1 more source

An attempt toward the generalized Langevin dynamics simulation

open access: yesCondensed Matter Physics, 2008
An attempt to generalize the Langevin dynamics simulation method is presented based on the generalized Langevin theory of liquids, in which the dynamics of both solute and solvent is treated by the generalized Langevin equations, but the integration of ...
B.Kim, S.-H.Chong, R.Ishizuka, F.Hirata
doaj   +1 more source

Enhancement of Critical Slowing Down in Chiral Phase Transition -- Langevin Dynamics Approach --

open access: yes, 2004
We derive the linear Langevin equation that describes the behavior of the fluctuations of the order parameter of the chiral phase transition above the critical temperature by applying the projection operator method to the Nambu-Jona-Lasinio model at ...
Aguiar   +75 more
core   +1 more source

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