Compacton matter waves in binary bose gases under strong nonlinear management
The existence of compacton matter waves in binary mixtures of quasi-one-dimensional Bose-Einstein condensates in deep optical lattices, and in the presence of nonlinearity management, is demonstrated. For this, we derive an averaged vector discrete nonlinear Schr¨odinger equation (DNLSE) and show...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
American Physical Society
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/40457/1/PhysRevA.90.063637.pdf http://irep.iium.edu.my/40457/4/40457_Compacton%20matter%20waves%20in%20binary%20bose%20gases_SCOPUS.pdf http://irep.iium.edu.my/40457/ http://journals.aps.org/pra/abstract/10.1103/PhysRevA.90.063637 |
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| Summary: | The existence of compacton matter waves in binary mixtures of quasi-one-dimensional Bose-Einstein
condensates in deep optical lattices, and in the presence of nonlinearity management, is demonstrated. For
this, we derive an averaged vector discrete nonlinear Schr¨odinger equation (DNLSE) and show that compacton
solutions of different types can exist as stable excitations. Stability properties are studied by linear analysis
and by direct numerical integrations of the DNLSE system and their dependence on the inter- and intraspecies
scattering lengths investigated. We show that under proper management conditions, compactons can be very
robust excitations that can emerge spontaneously from generic initial conditions. A possible experimental setting
for compacton observation is also discussed. |
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