Slow relaxation, confinement, and solitons

Slow relaxation, confinement, and solitons

Millisecond crystal relaxation has been used to explain anomalous decay in doped alkali halides. We attribute this slowness to Fermi-Pasta-Ulam solitons. Our model exhibits confinement of mechanical energy released by excitation. Extending the model to long times is justified by its relation to soli...

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Veröffentlicht in:Physical review letters 2002-06, Vol.88 (22), p.224101-224101, Article 224101
Hauptverfasser: Schulman, L S, Mihóková, E, Scardicchio, A, Facchi, P, Nikl, M, Polák, K, Gaveau, B
Format: Artikel
Sprache:eng
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Zusammenfassung:Millisecond crystal relaxation has been used to explain anomalous decay in doped alkali halides. We attribute this slowness to Fermi-Pasta-Ulam solitons. Our model exhibits confinement of mechanical energy released by excitation. Extending the model to long times is justified by its relation to solitons, excitations previously proposed to occur in alkali halides. Soliton damping and observation are also discussed.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.88.224101