Physics – Mathematical Physics
Scientific paper
2006-07-12
Physics
Mathematical Physics
14 pages
Scientific paper
10.1007/s10955-007-9278-0
We give a not trivial upper bound on the velocity of disturbances in an
infinitely extended anharmonic system at thermal equilibrium. The proof is
achieved by combining a control on the non equilibrium dynamics with an
explicit use of the state invariance with respect to the time evolution.
Buttà Paolo
Caglioti Emanuele
Marchioro Carlo
Ruzza S. Di
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