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Periodic instanton method and macroscopic quantum tunneling between two weakly-linked Bose-Einstein condensates | Yunbo Zhang
; H.J.W. Müller-Kirsten
; | Date: |
28 Dec 2000 | Journal: | Phys. Rev. A 64, 023608(2001) | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall quant-ph | Affiliation: | University of Kaiserslautern | Abstract: | A new method is used to investigate the tunneling between two weakly-linked Bose-Einstein condensates confined in double-well potential traps. The nonlinear interaction between the atoms in each well contributes to a finite chemical potential, which, with consideration of periodic instantons, leads to a remarkably high tunneling frequency. This result can be used to interpret the newly found Macroscopic Quantum Self Trapping (MQST) effect. Also a new kind of first-order crossover between different regions is predicted. | Source: | arXiv, cond-mat/0012491 | Services: | Forum | Review | PDF | Favorites |
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