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arXiv 0912.3633cond-mat.stat-mechmath-phmath.MPquant-ph
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热平衡中的一维不可穿透任意子。IV。关联函数的大时距渐近性

One-Dimensional Impenetrable Anyons in Thermal Equilibrium. IV. Large Time and Distance Asymptotic Behavior of the Correlation Functions

Ovidiu I. Patu, Vladimir E. Korepin, Dmitri V. Averin

摘要:

本文导出了有限温度下不可穿透的一维任意子场-场关联函数的大时距渐近行为。在适当的统计参数的限制下,我们恢复了不可穿透玻色子和自由费米子的著名结果。在低温(通常被认为是“共形”)极限,对于远离玻色子点的所有统计参数值,相关器中的前导项与共形场论的预测不一致,并且由单粒子能谱底部的单粒子态密度的奇异性决定。

英文摘要:

This work presents the derivation of the large time and distance asymptotic behavior of the field-field correlation functions of impenetrable one-dimensional anyons at finite temperature. In the appropriate limits of the statistics parameter, we recover the well-known results for impenetrable bosons and free fermions. In the low-temperature (usually expected to be the "conformal") limit, and for all values of the statistics parameter away from the bosonic point, the leading term in the correlator does not agree with the prediction of the conformal field theory, and is determined by the singularity of the density of the single-particle states at the bottom of the single-particle energy spectrum.

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