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Coherent matter waves emerging from Mott-insulators | K. Rodriguez
; S.R. Manmana
; M. Rigol
; R.M. Noack
; A. Muramatsu
; | Date: |
6 Jun 2006 | Subject: | Other | Abstract: | We study the formation of (quasi-)coherent matter waves emerging from a Mott insulator for strongly interacting bosons on a one-dimensional lattice. It has been shown previously that a quasi-condensate emerges at momentum pi/2a, where a is the lattice constant, in the limit of infinitely strong repulsion (hard-core bosons). Here we show that this phenomenon persists for all values of the repulsive interaction that lead to a Mott insulator at a commensurate filling. The non-equilibrium dynamics of hard-core bosons is treated exactly by means of a Jordan-Wigner transformation, and the generic case is studied using a time-dependent density matrix renormalization group technique. Different methods for controlling the emerging matter wave are discussed. | Source: | arXiv, cond-mat/0606155 | Services: | Forum | Review | PDF | Favorites |
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