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Energy band structure and intrinsic coherent properties in two weakly linked Bose Einstein Condensates | | Wei-Dong Li
; Yunbo Zhang
; J. -Q. Liang
; | | Date: |
21 May 2003 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | The energy band structure and energy splitting due to quantum tunneling in two weakly linked Bose-Einstein condensates were calculated by using the instanton method. The intrinsic coherent properties of Bose Josephson junction were investigated in terms of energy splitting. For $E_{C}/E_{J}ll 1$, the energy splitting is small and the system is globally phase coherent. In the opposite limit, $E_{C}/E_{J}gg 1$, the energy splitting is large and the system becomes a phase dissipation. Our reslults suggest that one should investigate the coherence phenomna of BJJ in proper condition such as $E_{C}/E_{J}sim 1$. | | Source: | arXiv, cond-mat/0305504 | | Services: | Forum | Review | PDF | Favorites | |
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