Low-energy chaos in the Fermi - Pasta - Ulam problem
D L Shepelyansky; D L Shepelyansky; Laboratoire de Physique Quantique, UMR C5626 du CNRS, Université Paul Sabatier, F-31062 Toulouse Cedex 4, France
Журнал:
Nonlinearity
Дата:
1997-09-01
Аннотация:
A possibility that in the FPU problem the critical energy for chaos goes to zero when the number of particles in the chain increases is discussed. The distribution for long linear waves in this regime is found and an estimate for the new border of the transition to energy equipartition is given.
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