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Orderings at a finite temperature in bosonic Hubbard model with confinement potentials

Orderings at a finite temperature in bosonic Hubbard model with confinement potentials
具有限制势的玻色哈伯德模型中有限温度下的有序化
批准号:
21740245
负责人:
SUZUKI Takafumi
金额:
$1.75万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Young Scientists (B)
财政年份:
2009
资助国家:
日本
项目状态:
已结题
起止时间:
2009 至 2010

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英文摘要
We investigated finite temperature properties of quasi-2D dilute-bosonic-gas system with confinement potential by numerically solving the projected Gross-Pitaevskii equation. The exponent of phase correlation functions at the boundary between coherent and in-coherent region takes the same values of the KT phase transition. We also studied the orderings of the extended hard-core bosonic-Hubbard model on the square lattice by performing the quantum Monte Carlo simulations. In this system, the chemical potential specially increases along the x-axis. The results indicated that the checker board solid state and superfluid state are well specially separated and the particle density jumps at hc, where hc corresponds to the critical values of the first order transition in the systems with uniform potential. This behavior was not changed when we changed the potential shapes. This suggests that the static quantities such as particle density, local compressibility, and local stiffness, can be explained by the local density approximation.
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Hyperfine Interaction Estimation of Nitrogen Vacancy Center in Diamond
金刚石氮空位中心的超精细相互作用估计
DOI: --
发表时间: 2010
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影响因子: --
作者: [鹿野豊, 田中宗]
通讯作者: 田中宗
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  • 批准号:
    19K19006
  • 项目类别:
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  • 财政年份:
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  • 项目类别:
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