TY - JOUR
T1 - The "harmonic liquid" away from equilibrium. I. Stationary correlation functions
AU - Bafaluy, J.
AU - Rubí, J. M.
PY - 1988/11/1
Y1 - 1988/11/1
N2 - Some aspects of the linear chain of harmonic oscillators ("harmonic liquid") are studied. In particular we compute the stationary correlation functions of coordinates and momenta of the oscillators for a particular non-equilibrium steady state. We find that the coordinates and momenta autocorrelation functions are analogous to their equilibrium counterparts whereas the coordinates-momenta correlation functions exhibit long-range behaviour due to time reversal symmetry breaking. The non-equilibrium entropy of the chain is also computed. It contains a non-equilibrium part that depends on the temperature of the external sources and on the stationary temperature. A comparison with a non-equilibrium entropy obtained from information theory is made. © 1988.
AB - Some aspects of the linear chain of harmonic oscillators ("harmonic liquid") are studied. In particular we compute the stationary correlation functions of coordinates and momenta of the oscillators for a particular non-equilibrium steady state. We find that the coordinates and momenta autocorrelation functions are analogous to their equilibrium counterparts whereas the coordinates-momenta correlation functions exhibit long-range behaviour due to time reversal symmetry breaking. The non-equilibrium entropy of the chain is also computed. It contains a non-equilibrium part that depends on the temperature of the external sources and on the stationary temperature. A comparison with a non-equilibrium entropy obtained from information theory is made. © 1988.
UR - https://www.scopus.com/pages/publications/0000993607
U2 - 10.1016/0378-4371(88)90107-0
DO - 10.1016/0378-4371(88)90107-0
M3 - Article
SN - 0378-4371
VL - 153
SP - 129
EP - 146
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
IS - 1
ER -