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We report a numerical analysis of corrections to finite size scaling at the Anderson transition due to irrelevant scaling variables and non-linearities of the scaling variables. By taking proper account of these corrections, the…

无序系统与神经网络 · 物理学 2009-10-31 Keith Slevin , Tomi Ohtsuki

A review of recent progress in numerical studies of the Anderson transition in three dimensional systems is presented. From high precision calculations the critical exponent $\nu$ for the divergence of the localization length is estimated…

介观与纳米尺度物理 · 物理学 2017-09-27 Tomi Ohtsuki , Keith Slevin , Tohru Kawarabayashi

This chapter describes the progress made during the past three decades in the finite size scaling analysis of the critical phenomena of the Anderson transition. The scaling theory of localisation and the Anderson model of localisation are…

介观与纳米尺度物理 · 物理学 2015-05-18 Bernhard Kramer , Angus MacKinnon , Tomi Ohtsuki , Keith Slevin

We analyze the scaling behavior of the higher Lyapunov exponents at the Anderson transition. We estimate the critical exponent and verify its universality and that of the critical conductance distribution for box, Gaussian and Lorentzian…

无序系统与神经网络 · 物理学 2009-11-07 Keith Slevin , Tomi Ohtsuki

We report an analysis of the Anderson transition in an SU(2) model with chiral symmetry. Clear single parameter scaling behaviour is observed. We estimate the critical exponent for the divergence of the localization length to be…

无序系统与神经网络 · 物理学 2015-06-24 Yoichi Asada , Keith Slevin , Tomi Ohtsuki

The nature of the critical point of the Anderson transition in high magnetic fields is discussed with an emphasis on scale invariance and universality of the critical exponent. Special attention is paid to the distribution function of the…

介观与纳米尺度物理 · 物理学 2009-10-31 Tomi Ohtsuki , Keith Slevin , Tohru Kawarabayashi

The Anderson transition in three dimensions in a randomly varying magnetic flux is investigated in detail by means of the transfer matrix method with high accuracy. Both, systems with and without an additional random scalar potential are…

无序系统与神经网络 · 物理学 2009-10-31 T. Kawarabayashi , B. Kramer , T. Ohtsuki

Disordered non-interacting systems are classified into ten symmetry classes, with the unitary class being the most fundamental. The three and four dimensional unitary universality classes are attracting renewed interest because of their…

无序系统与神经网络 · 物理学 2016-09-27 Keith Slevin , Tomi Ohtsuki

We use multifractal finite-size scaling to perform a high-precision numerical study of the critical properties of the Anderson localization-delocalization transition in the unitary symmetry class, considering the Anderson model including a…

无序系统与神经网络 · 物理学 2017-10-11 Jakob Lindinger , Alberto Rodríguez

The Anderson transition in a 3D system with symplectic symmetry is investigated numerically. From a one-parameter scaling analysis the critical exponent $\nu$ of the localization length is extracted and estimated to be $\nu = 1.3 \pm 0.2$.…

凝聚态物理 · 物理学 2009-10-28 T. Kawarabayashi , T. Ohtsuki , K. Slevin , Y. Ono

We report a careful finite size scaling study of the metal insulator transition in Anderson's model of localisation. We focus on the estimation of the critical exponent $\nu$ that describes the divergence of the localisation length. We…

介观与纳米尺度物理 · 物理学 2019-11-21 Keith Slevin , Tomi Ohtsuki

The boundary condition dependence of the critical behavior for the three dimensional Anderson transition is investigated. A strong dependence of the scaling function and the critical conductance distribution on the boundary conditions is…

无序系统与神经网络 · 物理学 2009-10-31 Keith Slevin , Tomi Ohtsuki , Tohru Kawarabayashi

Numerical studies of the Anderson transition are based on the finite-size scaling analysis of the smallest positive Lyapunov exponent. We prove numerically that the same scaling holds also for higher Lyapunov exponents. This scaling…

介观与纳米尺度物理 · 物理学 2009-10-31 P. Markos

We report improved numerical estimates of the critical exponent of the Anderson transition in Anderson's model of localization in $d=4$ and $d=5$ dimensions. We also report a new Borel-Pad\'e analysis of existing $\epsilon$ expansion…

无序系统与神经网络 · 物理学 2014-07-29 Yoshiki Ueoka , Keith Slevin

The Anderson metal-insulator transition is a continuous phase transition driven by disorder. It remains a challenging problem to theoretically determine universal critical properties at the transition. The Anderson transition in a model…

介观与纳米尺度物理 · 物理学 2007-05-23 P. W. Brouwer , A. Furusaki , C. Mudry , S. Ryu

The Anderson transitions in a random magnetic field in three dimensions are investigated numerically. The critical behavior near the transition point is analyzed in detail by means of the transfer matrix method with high accuracy for…

无序系统与神经网络 · 物理学 2017-09-27 T. Kawarabayashi , B. Kramer , T. Ohtsuki

We report a numerical investigation of the Anderson transition in two-dimensional systems with spin-orbit coupling. An accurate estimate of the critical exponent $\nu$ for the divergence of the localization length in this universality class…

无序系统与神经网络 · 物理学 2009-11-07 Yoichi Asada , Keith Slevin , Tomi Ohtsuki

We study the Anderson transition in the SU(2) model and the Ando model. We report a new precise estimate of the critical exponent for the symplectic universality class of the Anderson transition. We also report numerical estimation of the…

无序系统与神经网络 · 物理学 2015-06-24 Yoichi Asada , Keith Slevin , Tomi Ohtsuki

We study the Anderson transition on a generic model of random graphs with a tunable branching parameter $1<K\le 2$, through large scale numerical simulations and finite-size scaling analysis. We find that a single transition separates a…

We study the Anderson-type transition previously found in the spectrum of the QCD quark Dirac operator in the high temperature, quark-gluon plasma phase. Using finite size scaling for the unfolded level spacing distribution, we show that in…

高能物理 - 格点 · 物理学 2014-04-02 Matteo Giordano , Tamas G. Kovacs , Ferenc Pittler
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