Stability of two-dimensional, controlled, Bose-Einstein coherent states

FEDELE, RENATO (2007) Stability of two-dimensional, controlled, Bose-Einstein coherent states. [Pubblicazione su rivista scientifica]

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URL: http://www.springerlink.com/content/e17rx475p6134387/?p=617ed491ad2b4ccca07a0772e402756f&pi=2 Supplementary Online Material10.1140/epjb/e2007-00361-6

Abstract

Two-dimensional stability of a controlled Bose-Einstein condensation state, in the form of a nonlinear Schrödinger soliton [JETP Lett. 80 535 (2004)], is studied for the condensations with both repulsive and attractive inter-atom interactions. The Gross-Pitaevski equation is solved numerically, taking initialy a controlled soliton whose “effective mass” is several times bigger than the critical value for a weak collapse in the absence of a potential well, and allowing for reasonably large errors in the experimental realization of the trapping potential required by the theory. For repulsive and sufficiently weak attractive interactions, the controlled state is shown to remain stable inside a breathing potential well, for a time that is an order of magnitude longer than the characteristic periods of the forced and eigenoscillations of the soliton. The collapse is observed only for attractive interactions, when the nonlinear attraction exceeded the appropriate threshold.

Tipologia di documento:Pubblicazione su rivista scientifica
Parole chiave:Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations, Solitons, Boson systems, Controlling Potential Method
Settori scientifico-disciplinari MIUR:Non specificato
Stato del full text:Accessibilità ristretta
Data:2007
Altri Autori:D. Jovanovic, R. Fedele
Numero di pagine:6
Intervallo di pagina:pp. 363-368
Volume:60
Numero:3
URL:http://www.springerlink.com/content/e17rx475p6134387/?p=617ed491ad2b4ccca07a0772e402756f&pi=2 Supplementary Online Material10.1140/epjb/e2007-00361-6
Dipartimento o Struttura:Dipartimento di Scienze Fisiche
Numero identificativo:10.1140/epjb/e2007-00361-6
Titolo rivista/pubblicazione:THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS
Numero di sistema:6689
Depositato il:20 Ottobre 2010 10:34
Ultima modifica:20 Ottobre 2010 10:34

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