Existence and stability of discrete intersite bright solitons in Bose Einstein condensates in parabolic trapped optical lattices

We consider intersite discrete bright solitons in one-dimensional Bose-Einstein condensate in parabolic trapped optical lattice. Analytical and numerical calculations are performed to determine the existence and stability of bright solitons. Analysis is based on continuous Gross-Pitaevskii equation...

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Bibliographic Details
Main Authors: Kumar, Ramesh, Singh, U., Swami, O. P., Suthar, G., Nagar, A. K.
Format: Conference Proceeding
Language:English
Subjects:
Bose-Einstein condensates
Dimensional analysis
Dimensional stability
Optical lattices
Perturbation theory
Schrodinger equation
Solitary waves
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Summary:We consider intersite discrete bright solitons in one-dimensional Bose-Einstein condensate in parabolic trapped optical lattice. Analytical and numerical calculations are performed to determine the existence and stability of bright solitons. Analysis is based on continuous Gross-Pitaevskii equation and discrete nonlinear Schrodinger equation. It is observed that the strength of external magnetic trap can change the stability of bright solitons. Stability windows of bright solitons are presented and stability approximations are derived using perturbation theory, with their numerical results.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0225070