One-dimensional Bose-Hubbard model with pure three-body interactions

• Authors: Tomasz Sowiński
• Languages of publication: EN

Abstracts

EN

The extended Bose-Hubbard model with pure three-body local interactions is studied using the Density Matrix Renormalization Group approach. The shapes of the first two insulating lobes are discussed, and the values of the critical tunneling for which the system undergoes the quantum phase transition from insulating to superfluid phase are predicted. It is shown that stability of insulating phases, in contrast to the standard Bose-Hubbard model, is enhanced for larger fillings. It is also shown that, on the tip of the boundary of the insulating phase, the model under consideration belongs to the Berenzinskii-Kosterlitz-Thouless universality class.

Keywords

EN

extended Bose-Hubbard model; three-body interactions; BKT transition

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2014
• Volume: 12
• Issue: 7
• Pages: 473-479

Dates

published

1 - 7 - 2014

online

21 - 6 - 2014

Contributors

author

Tomasz Sowiński

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Identifiers

DOI

10.2478/s11534-014-0481-8