Naslov
Nonlinear response for time-dependent external fields: Shear flow and color conductivity

Autori
Petravic, Janka ; Evans, Denis J.

Izvornik
International journal of thermophysics (0195-928X) 19 (1998), 4; 1049-1062

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
dynamic response ; external flows ; many-body problems ; molecular dynamics ; nonequilibrium flow ; nonlinear systems ; simulation

Sažetak
We present a generalization of the nonlinear response theory for autonomous systems which can be applied to classical many-body systems in large time- dependent external fields. Our formalism represents the first practical applica- tion of response theory to such problems, and provides a method of evaluating averages of phase functions that is more efficient than direct computer simula- tion. Our expressions for the nonlinear time-dependent response are tested against nonequilibrium molecular dynamics computer simulation of two simple nonautonomous systems. The relation of our results to known special cases (time-dependent linear response and time-independent nonlinear response) is discussed. KEY

Izvorni jezik
Engleski

Znanstvena područja
Matematika, Fizika

POVEZANOST RADA