Dissipation, fluctuations, and conservation laws

Grassia, P

Abstract

A large particle moves through a sea of small particles. On the microscale, all particle collisions are elastic. However, on the macroscale, where only the large particle is properly resolved, dissipative forces and fluctuating random forces are observed. These forces are connected by a fluctuation-dissipation theorem proved in two different ways, first via statistical mechanics, and second from fundamental classical mechanical principles of momentum and energy conservation. The novel classical mechanics proof elucidates the relation between micro- and macroscale behaviors, and offers new insights into the physics behind the fluctuation-dissipation result. (C) 2001 American Association of Physics Teacher.

Más información

Título según WOS: ID WOS:000166580000009 Not found in local WOS DB
Título de la Revista: AMERICAN JOURNAL OF PHYSICS
Volumen: 69
Número: 2
Editorial: AMER ASSOC PHYSICS TEACHERS
Fecha de publicación: 2001
Página de inicio: 113
Página final: 119
DOI:

10.1119/1.1289211

Notas: ISI