Fourier law in the alternate-mass hard-core potential chain.
We study energy transport in a one-dimensional model of elastically colliding particles with alternate masses m and M. In order to prevent total momentum conservation, we confine particles with mass M inside a cell of finite size. We provide convincing numerical evidence for the validity of Fourier law of heat conduction in spite of the lack of exponential dynamical instability. Comparison with previous results on similar models shows the relevance of the role played by total momentum conservation.
Li
Baowen
B
Department of Physics, National University of Singapore, Singapore 117542, Republic of Singapore.
Casati
Giulio
G
Wang
Jiao
J
Prosen
Tomaz
T