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arXiv 1507.02162cond-mat.dis-nnhep-lat
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高温量子色动力学Dirac算符谱中的Anderson跃迁和多重分形

Anderson transition and multifractals in the spectrum of the Dirac operator of Quantum Chromodynamics at high temperature

L. Ujfalusi, M. Giordano, F. Pittler, T. G. Kovács, I. Varga

摘要:

本文研究了高温下量子色动力学Dirac算符谱中的Anderson跃迁,研究了临界夸克本征函数的性质。应用多重分形有限尺寸标度,我们确定的临界点和临界指数的过渡,发现协议与以前的结果,并与现有的结果为酉安德森模型。我们估计了几个多重分形指数,发现在这种情况下也与最近确定的一元安德森模型。我们的结果证实了高温下夸克Dirac算符谱中存在真正的安德森局域化-离域跃迁,并进一步支持它属于3D么正安德森模型类.

英文摘要:

We investigate the Anderson transition found in the spectrum of the Dirac operator of Quantum Chromodynamics (QCD) at high temperature, studying the properties of the critical quark eigenfunctions. Applying multifractal finite-size scaling we determine the critical point and the critical exponent of the transition, finding agreement with previous results, and with available results for the unitary Anderson model. We estimate several multifractal exponents, finding also in this case agreement with a recent determination for the unitary Anderson model. Our results confirm the presence of a true Anderson localization-delocalization transition in the spectrum of the quark Dirac operator at high-temperature, and further support that it belongs to the 3D unitary Anderson model class.

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