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arXiv 0909.0030cond-mat.stat-mechcond-mat.quant-gas
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分数阶不相容统计描述的宏观物理系统中不相容统计参数的估计

An ansatz for the exclusion statistics parameters in macroscopic physical systems described by fractional exclusion statistics

Dragoş-Victor Anghel

摘要:

我介绍了一个分析的排斥统计参数的分数排斥统计(FES)系统,我应用它来计算粒子的统计分布从两个,玻色子和费米子的观点。然后,为了检验该方法的适用性,我计算了三个著名模型中的FES参数:费米液体类型的系统中,在热力学Bethe方法中描述的一维量子系统和分数量子Hall(HHH)系统中的准粒子激发。前两个模型的FES参数满足的anabolic,而第三个模型,虽然接近的形式给出的anabolic,代表一个例外。在此情况下,我还表明,FES参数的一般性质,推导出其他地方(EPL 87,60009,2009),也满足的参数的ECOH液体。

英文摘要:

I introduce an ansatz for the exclusion statistics parameters of fractional exclusion statistics (FES) systems and I apply it to calculate the statistical distribution of particles from both, bosonic and fermionic perspectives. Then, to check the applicability of the ansatz, I calculate the FES parameters in three well-known models: in a Fermi liquid type of system, a one-dimensional quantum systems described in the thermodynamic Bethe ansatz and quasiparticle excitations in the fractional quantum Hall (FQH) systems. The FES parameters of the first two models satisfy the ansatz, whereas those of the third model, although close to the form given by the ansatz, represent an exception. With this ocasion I also show that the general properties of the FES parameters, deduced elsewhere (EPL 87, 60009, 2009), are satisfied also by the parameters of the FQH liquid.

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