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Semiclassical excitation spectrum of an integrable discrete spin chain

โœ Scribed by Nikos Theodorakopoulos


Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
343 KB
Volume
130
Category
Article
ISSN
0375-9601

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A one-dimensional integrable lattice system of ODEs for complex functions Q n (ฯ„ ) that exhibits dispersive phenomena in the phase is studied. We consider wave solutions of the local form Q n (ฯ„ ) โˆผ q exp(i(kn + ฯ‰ฯ„ + c)), in which q, k, and ฯ‰ modulate on long time and long space scales t = ฮตฯ„ and x