摘要翻译:
利用有限尺寸密度矩阵重整化群方法研究了具有两个耦合链的波速梯。我们发现,在一个公度的bosonic梯中,超流体到Mott绝缘体转变的临界现场相互作用($u_c$)随着链间跳跃($t_\bot$)的增加而增大。我们分析了这个量子相变,得到了$t_\bot-u$平面上的相图。
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英文标题:
《Phase diagram of a bosonic ladder with two coupled chains》
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作者:
Meetu Sethi Luthra, Tapan Mishra, Ramesh V. Pai, B. P. Das
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最新提交年份:
2008
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分类信息:
一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Physics 物理学
二级分类:Other Condensed Matter 其他凝聚态物质
分类描述:Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
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英文摘要:
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.
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PDF链接:
https://arxiv.org/pdf/802.0396


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