Supersolid and solitonic phases in one-dimensional Extended Bose-Hubbard model

Details Supersolid and solitonic phases in one-dimensional Extended Bose-Hubbard model Supersolid and solitonic phases in one-dimensional Extended Bose-Hubbard model

2009-07-07

arxiv.org/abs/0907.1258v1

Physics

Condensed Matter

Quantum Gases

7 pages, 11 figures

Scientific paper

We report our findings on quantum phase transitions in cold bosonic atoms in a one dimensional optical lattice using the finite size density matrix renormalization group method in the framework of the extended Bose-Hubbard model. We consider wide ranges of values for the filling factors and the nearest neighbor interactions. At commensurate fillings, we obtain two different types of charge density wave phases and a Mott insulator phase. However, departure from commensurate fillings yield the exotic supersolid phase where both the crystalline and the superfluid orders coexist. In addition, we obtain signatures for solitary waves and also superfluidity.

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