Effective-range signatures in quasi-1D matter waves: sound velocity and solitons

We investigate ultracold and dilute bosonic atoms under strong transverse harmonic confinement using a 1D modified Gross-Pitaevskii equation (1D MGPE), which accounts for the energy dependence of the two-body scattering amplitude within an effective-range expansion. We study sound waves and solitons...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. B, Atomic, molecular, and optical physics Vol. 48; no. 11; pp. 115301 - 7
Main Authors Sgarlata, F, Mazzarella, G, Salasnich, L
Format Journal Article
LanguageEnglish
Published IOP Publishing 14.06.2015
Subjects
Boson systems
Density
Energy use
Mathematical analysis
Matter waves
Scattering amplitude
Solitons
Sound velocity
trapped gases
ultracold gases
Online AccessGet full text

Cover

More Information
Summary:We investigate ultracold and dilute bosonic atoms under strong transverse harmonic confinement using a 1D modified Gross-Pitaevskii equation (1D MGPE), which accounts for the energy dependence of the two-body scattering amplitude within an effective-range expansion. We study sound waves and solitons of the quasi-1D system, comparing the 1D MGPE results with the 1D GPE ones. We find that when the finite-size nature of the interaction is taken into account, the speed of sound and the density profiles of both dark and bright solitons show relevant quantitative changes with respect to predictions given by the standard 1D GPE.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/48/11/115301