Open AccessTHE MICROSCOPIC PHENOMENOLOGICAL THEORY OF ANALYSIS FOR THE PROBLEM OF NONEQUILIBRIUM FLUCTUATIONS (Ⅰ)——A NEW THEORY OF EXTENDED IRREVERSIBLE THERMODY-NAMICS AND NONEQUILIBRIUM CORRECTIONS OF THE FLUCTUATION-DISSIPATION EXPRESSIONS FOR THE HEAT FL
Author(s) -
LI FU-BlN
Publication year - 1989
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.38.1467
Subject(s) - non equilibrium thermodynamics , physics , dissipation , heat flux , entropy (arrow of time) , fluctuation dissipation theorem , microscopic theory , entropy production , statistical physics , thermodynamics , condensed matter physics , heat transfer
This paper provide the microscopic phenomenological theory of analysis for the problem of nonequilibrium fluctuations, i.e. the statistical theory for description of nonequilibrium fluctuations. This theory is based on a generalized nonequilibrium entropy and an extension of the Einstein formula for the probability of the fluctuations. We obtain the second moments of nonequilibrium fluctuation of the specific energy and the heat flux in rigid heat conductors by calculation. This approach leads to nonequilibrium corrections to the conventional fluctuation-dissipation expressions for the heat fluctuations. The corresponding numerical corrections are obtained for phonon heat transport in dielectrics and for electronic heat transport in metals.