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Chaotic Dynamics in a Quantum Fermi-Pasta-Ulam Problem.

Alexander L Burin1, Andrii O Maksymov1, Ma'ayan Schmidt1

  • 1Department of Chemistry, Tulane University, New Orleans, LA 70118, USA.

Entropy (Basel, Switzerland)
|December 3, 2020
PubMed
Summary

We studied quantum Fermi-Pasta-Ulam systems to understand chaotic vibrations in atomic chains. Chaotic behavior emerges at lower energies in systems with free or fixed ends compared to periodic ones.

Keywords:
Fermi—Pasta—Ulam problemanharmonic vibrationsmolecular vibrationsquantum chaosvibrational energy relaxation and transport

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