Phase separated charge density wave phase in two species extended Bose-Hubbard model

Details Phase separated charge density wave phase in two species extended Bose-Hubbard model Phase separated charge density wave phase in two species extended Bose-Hubbard model

2008-04-11

arxiv.org/abs/0804.1930v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevA.78.013632

We study the quantum phase transitions in a two component bose-mixture in a one-dimensional optical lattice. The calculations have been performed in the framework of the extended Bose-Hubbard model using the finite size density matrix renormalization group method. We obtain different phase transitions for the system for integer filling. When the inter-species on-site and the nearest neighbor interactions are larger than the intra-species on-site and also the nearest neighbor interactions, the system exhibits a phase separated charge density wave (PSCDW) order that is characterized by the two species being spatially separated and existing in the density wave phases.

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