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arXiv 2208.02458cond-mat.stat-mechcond-mat.quant-gasmath-phmath.MP
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有限温度下旋转$2d$阱中非相互作用费米子的密度分布

Density profile of noninteracting fermions in a rotating $2d$ trap at finite temperature

Manas Kulkarni, Pierre Le Doussal, Satya N. Majumdar, Gregory Schehr

摘要:

本文研究了在具有一个附加的排斥中心势$γ/r^2$的$2d$谐振阱中,以恒定频率$Ω$旋转的$2d$无自旋非相互作用费米子的平均密度.最近在Phys. Rev. A $\textbf{103}$,033321(2021)中研究了零温度下的平均密度,并且在大$N$极限中发现了一种有趣的多层“婚礼蛋糕”结构,其中心具有“孔”。本文研究了有限温度下的平均密度。我们演示了如何在有限的温度下修改这种“婚礼蛋糕”的结构。这些大的$N$结果保证远远超出标准的局域密度近似。我们还将我们的结果推广到各种各样的陷阱势,并证明了相关的标度函数的普遍性,无论是在散装和边缘的“婚礼蛋糕”。

英文摘要:

We study the average density of $N$ spinless noninteracting fermions in a $2d$ harmonic trap rotating with a constant frequency $Ω$ and in the presence of an additional repulsive central potential $γ/r^2$. The average density at zero temperature was recently studied in Phys. Rev. A $\textbf{103}$, 033321 (2021) and an interesting multi-layered "wedding cake" structure with a "hole" at the center was found for the density in the large $N$ limit. In this paper, we study the average density at finite temperature. We demonstrate how this "wedding-cake" structure is modified at finite temperature. These large $N$ results warrant going much beyond the standard Local Density Approximation. We also generalize our results to a wide variety of trapping potentials and demonstrate the universality of the associated scaling functions both in the bulk and at the edges of the "wedding-cake".

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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