Equilibration and Universal Heat Conduction in Fermi-Pasta-Ulam Chains
Equilibration and Universal Heat Conduction in Fermi-Pasta-Ulam Chains
It is shown numerically that for Fermi Pasta Ulam (FPU) chains with alternating masses and heat baths at slightly different temperatures at the ends, the local temperature (LT) on small scales behaves paradoxically in steady state. This expands the long established problem of equilibration of FPU chains. A well-behaved LT …