Phase diagram of a bosonic ladder with two coupled chains

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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 ($t_\bot$)increases. We analyze this quantum phase transition and obtain the phase diagram in the $t_\bot -U$ plane.
6 pages, 10 figures

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Statistical Mechanics, Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/154071

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0802.0396
 http://arxiv.org/abs/0802.0396

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arXiv