Phase diagram of a bosonic ladder with two coupled chains

Abstract

We study a bosonic ladder with two coupled chains using the finite size density matrix renormalisation group method. We show that in a commensurate bosonic ladder the critical on-site interaction ($U_C$) for the superfluid to Mott insulator transition becomes larger as the inter-chain hopping ($t_{\perp }$)increases. We analyze this quantum phase transition and obtain the phase diagram in the $t_{\perp }-U$ plane.

6 pages, 10 figures

References in corpus (2)

• Many-Body Physics with Ultracold Gases
• Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi Condensates