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Titolo:
DYNAMICS IN DISCRETE 2-DIMENSIONAL NONLINEAR SCHRODINGER-EQUATIONS INTHE PRESENCE OF POINT-DEFECTS
Autore:
CHRISTIANSEN PL; GAIDIDEI YB; RASMUSSEN KO; MEZENTSEV VK; RASMUSSEN JJ;
Indirizzi:
TECH UNIV DENMARK,INST MATH MODELLING,BLDG 303 DK-2800 LYNGBY DENMARK RISO NATL LAB,DEPT OPT & FLUID DYNAM DK-4000 ROSKILDE DENMARK
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 2, volume: 54, anno: 1996,
pagine: 900 - 912
SICI:
0163-1829(1996)54:2<900:DID2NS>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOCALIZED MODES; ENERGY-TRANSFER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
P.L. Christiansen et al., "DYNAMICS IN DISCRETE 2-DIMENSIONAL NONLINEAR SCHRODINGER-EQUATIONS INTHE PRESENCE OF POINT-DEFECTS", Physical review. B, Condensed matter, 54(2), 1996, pp. 900-912

Abstract

The dynamics of two-dimensional discrete structures is studied in theframework of the generalized two-dimensional discrete nonlinear Schrodinger equation. The nonlinear coupling in the form of the Ablowitz-Ladik nonlinearity and point impurities is taken into account. The stability properties of the stationary solutions are examined. The essential importance of the existence of stable immobile solitons in the two-dimensional dynamics of the traveling pulses is demonstrated. The typical scenario of the two-dimensional quasicollapse of a moving intense pulse represents the formation of standing trapped narrow spikes. The influence of the point impurities on this dynamics is also investigated.

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Documento generato il 28/09/20 alle ore 11:38:24