A Two-Parameter Continuation Method for Rotating Two-Component Bose-Einstein Condensates in Optical Lattices
Y.-S. Wang 1, B.-W. Jeng 2, C.-S. Chien 3*1 Department of Applied Mathematics, National Chung Hsing University, Taichung 402, Taiwan.
2 Department of Mathematics Education, National Taichung University of Education, Taichung 403, Taiwan.
3 Department of Computer Science and Information Engineering, Ching Yun University, Jungli 320, Taiwan.
Received 11 July 2011; Accepted (in revised version) 17 February 2012
Available online 28 June 2012
We study efficient spectral-collocation and continuation methods (SCCM) for rotating two-component Bose-Einstein condensates (BECs) and rotating two-component BECs in optical lattices, where the second kind Chebyshev polynomials are used as the basis functions for the trial function space. A novel two-parameter continuation algorithm is proposed for computing the ground state and first excited state solutions of the governing Gross-Pitaevskii equations (GPEs), where the classical tangent vector is split into two constraint conditions for the bordered linear systems. Numerical results on rotating two-component BECs and rotating two-component BECs in optical lattices are reported. The results on the former are consistent with the published numerical results.AMS subject classifications: 65N35, 35P30, 35Q55
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Key words: Spectral collocation method, second kind Chebyshev polynomials, periodic potential, bifurcation.
Email: firstname.lastname@example.org (Y.-S. Wang), email@example.com (B.-W. Jeng), firstname.lastname@example.org, email@example.com (C.-S. Chien)