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arXiv 1012.0151math-phcond-mat.quant-gasmath.MP
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关于费米子酉气体模型哈密顿量的注记

Remarks on the Hamiltonian for the Fermionic Unitary Gas model

Domenico Finco, Alessandro Teta

摘要:

考虑一组质量为1/2的$N$全同费米子与一组质量为$m/2$的不同类型的$N$全同费米子通过零程相互作用构成的三维量子系统.利用重整化过程,我们构造相应的二次(或能量)形式,并定义所谓的Ter-Martirosyan-Skornyakov扩展$H_α$,这是自然的候选人作为一个可能的哈密顿系统。在M=1的特殊情况下,在参数$m$,$N$的适当条件下,我们证明了二次型从下面是无界的。在相同的设置中,我们证明了$H_α$是不是一个自伴和有界的从下面的运营商,这特别表明,所谓的托马斯效应可能会发生。

英文摘要:

We consider a quantum system in dimension three composed by a group of $N$ identical fermions, with mass 1/2, interacting via zero-range interaction with a group of $M$ identical fermions of a different type, with mass $m/2$. Exploiting a renormalization procedure, we construct the corresponding quadratic (or energy) form and define the so-called Ter-Martirosyan-Skornyakov extension $H_α$, which is the natural candidate as a possible Hamiltonian of the system. In the particular case M=1, under a suitable condition on the parameters $m$, $N$, we show that the quadratic form is unbounded from below. In the same setting we prove that $H_α$ is not a self-adjoint and bounded from below operator and this in particular suggests that the so-called Thomas effect could occur.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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