Results 81 to 90 of about 16,328 (286)

On the complex Langevin equation

open access: yes, 1988
We discuss the Langevin equation for a complex Boltzmann distribution, allowing for modifications of the process. The relation between the two different time development operators involved is analyzed, with emphasis on their ...
Söderberg, B.
core   +1 more source

A Phase‐Resolved Geometric Deep Learning Framework Maps Structural Determinants of Disease‐Associated Protein Aggregation and Guides Suppressor Design

open access: yesAdvanced Science, EarlyView.
SKALE 2.0 maps disease‐associated protein aggregation as a phase‐resolved structural process, linking mutation‐induced geometric perturbations to nucleation, elongation, and suppressor design. Across neurodegenerative proteins, the framework reveals cryptic aggregation vulnerabilities, separates phase‐concordant and phase‐switching mutations, and ...
Jia Shen Sio   +6 more
wiley   +1 more source

Optimizing Stratification in Binary Colloidal Supraparticles

open access: yesAdvanced Science, EarlyView.
Supraparticles from binary particle populations show stratification when dried at high Péclet numbers. In spray‐dried systems at high initial particle concentration and fast drying conditions optimal combinations of particle size ratios and volume fractions that produce maximal stratification are found both in experiment and simulation, contrasting the
Frederic Rudlof   +5 more
wiley   +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

Langevin equation for the density of a system of interacting Langevin processes [PDF]

open access: yesJournal of Physics A: Mathematical and General, 1996
We present a simple derivation of the stochastic equation obeyed by the density function for a system of Langevin processes interacting via a pairwise potential. The resulting equation is considerably different from the phenomenological equations usually used to describe the dynamics of non conserved (Model A) and conserved (Model B) particle systems ...
openaire   +2 more sources

Relativistic stochastic mechanics I: Langevin equation from observer's perspective

open access: yes, 2023
Two different versions of relativistic Langevin equation in curved spacetime background are constructed, both are manifestly general covariant. It is argued that, from the observer's point of view, the version which takes the proper time of the Brownian ...
Cai, Yifan, Zhao, Liu, Wang, Tao
core   +1 more source

Integrated Optoelectronic Model to Predict the External Quantum Efficiency of Single‐Layer TADF Organic Light‐Emitting Diodes

open access: yesAdvanced Electronic Materials, EarlyView.
An experimentally validated optoelectronic device model is presented to describe the efficiency and roll‐off behavior of single‐layer TADF OLEDs. By coupling charge transport, exciton dynamics, and optical outcoupling, the model reproduces the External Quantum Efficiency (EQE) across different emission layer thicknesses and temperatures, offering ...
Jawid Nikan   +4 more
wiley   +1 more source

A Dance with the Langevin Equation [PDF]

open access: yes, 2018
In this thesis, we shall discuss the Langevin equation. While the equation is well known in Statistical Physics, we show novel adaptions to the field of Machine Learning. In particular, we elaborate briefly on a recipe in an unsupervised learning scheme.
Nijkamp, Erik
core  

Investigation of Mode Coupling in Graded Index Plastic Optical Fibers Using the Langevin Equation

open access: yes, 2020
© 1983-2012 IEEE. By employing the Langevin equation, we have examined a mode coupling in graded index plastic optical fiber. The numerical integration of the Langevin equation is based on the computer-simulated Langevin force.
Savovic, Svetislav   +1 more
core   +1 more source

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