Results 91 to 100 of about 3,220,420 (230)

Langevin dynamics and decoherence of heavy quarks at high temperatures

open access: yes, 2015
A Langevin equation of heavy quarks in high-temperature quark-gluon plasma is derived. The dynamics of heavy quark color is coupled with the phase space dynamics and causes a macroscopic superposition state of heavy quark momentum.
Akamatsu, Yukinao
core   +1 more source

Langevin equation in systems with also negative temperatures [PDF]

open access: yes, 2018
We discuss how to derive a Langevin equation (LE) in non standard systems, i.e. when the kinetic part of the Hamiltonian is not the usual quadratic function. This generalization allows to consider also cases with negative absolute temperature.
Marco Baldovin, A. Puglisi, A. Vulpiani
semanticscholar   +1 more source

Nonequilibrium solvent response force: What happens if you push a Brownian particle

open access: yesPhysical Review Research
In this Letter we discuss how to add forces to the Langevin equation. We derive an exact generalized Langevin equation for the dynamics of one particle subject to an external force embedded in a system of many interacting particles.
Fabian Koch, Jona Erle, Tanja Schilling
doaj   +1 more source

Synchronization and anti-synchroniztion of dynamically coupled networks

open access: yesNew Journal of Physics, 2019
We consider the coupling between two networks, each having N nodes whose individual dynamics is modeled by a two-state master equation. The intra-network interactions are all-to-all, whereas the inter-network interactions involve only a small percentage ...
Malgorzata Turalska   +2 more
doaj   +1 more source

Langevin equation with scale-dependent noise

open access: yes, 2003
A new wavelet based technique for the perturbative solution of the Langevin equation is proposed. It is shown that for the random force acting in a limited band of scales the proposed method directly leads to a finite result with no renormalization ...
D. Forster   +8 more
core   +2 more sources

On implicit impulsive Langevin equation involving mixed order derivatives

open access: yes, 2019
In this paper, we consider a nonlocal boundary value problem of nonlinear implicit impulsive Langevin equation involving mixed order derivatives. Sufficient conditions are constructed to discuss the qualitative properties like existence and Ulam’s ...
A. Zada   +3 more
semanticscholar   +1 more source

Monte Carlo simulations of bosonic reaction-diffusion systems and comparison to Langevin equation description

open access: yes, 2005
Using the Monte Carlo simulation method for bosonic reaction-diffusion systems introduced recently [S.-C. Park, Phys. Rev. E {\bf 72}, 036111 (2005)], one dimensional bosonic models are studied and compared to the corresponding Langevin equations derived
Park, Su-Chan
core   +1 more source

Fractional Langevin Equation of Distributed Order

open access: yes, 2010
Distributed order fractional Langevin-like equations are introduced and applied to describe anomalous diffusion without unique diffusion or scaling exponent.
Eab, C. H., Lim, S. C.
core   +1 more source

On the singular-hybrid type of the Langevin fractional differential equation with a numerical approach

open access: yesBoundary Value Problems
The nonlinear fractional Langevin equation is an important equation used in various areas of physics and mathematics. In this article, we focus on the singular-hybrid case of the generalized Langevin equations and prove the existence of a solution using ...
Samane Ijadi   +3 more
doaj   +1 more source

Full density matrix dynamics for large quantum systems: interactions, decoherence and inelastic effects

open access: yesNew Journal of Physics, 2013
We develop analytical tools and numerical methods for time evolving the total density matrix of the finite-size Anderson model. The model is composed of two finite metal grains, each prepared in canonical states of differing chemical potential and ...
Manas Kulkarni   +2 more
doaj   +1 more source

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