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The three-dimensional Anderson model with a rectangular distribution of site disorder displays two distinct localization-delocalization transitions, against varying disorder intensity, for a relatively narrow range of Fermi energies. Such…

Disordered Systems and Neural Networks · Physics 2016-08-31 S. L. A. de Queiroz

We study the three-dimensional Anderson model of localization with anisotropic hopping, i.e. weakly coupled chains and weakly coupled planes. In our extensive numerical study we identify and characterize the metal-insulator transition using…

Disordered Systems and Neural Networks · Physics 2016-08-15 Frank Milde , Rudolf A. Römer , Michael Schreiber

We study the distribution of phases and of Wigner delay times for a one-dimensional Anderson model with one open channel. Our approach, based on classical Hamiltonian maps, allows us an analytical treatment. We find that the distribution of…

Disordered Systems and Neural Networks · Physics 2009-10-31 A. Ossipov , Tsampikos Kottos , T. Geisel

We study an asymptotic behavior of the return probability for the critical random matrix ensemble in the regime of strong multifractality. The return probability is expected to show critical scaling in the limit of large time or large…

Disordered Systems and Neural Networks · Physics 2011-06-30 V. E. Kravtsov , A. Ossipov , O. M. Yevtushenko

The dynamical scaling for statistics of critical multifractal eigenstates proposed by Chalker is analytically verified for the critical random matrix ensemble in the limit of strong multifractality controlled by the small parameter $b\ll…

Disordered Systems and Neural Networks · Physics 2010-10-27 V. E. Kravtsov , A. Ossipov , O. M. Yevtushenko , E. Cuevas

We study the critical dynamics of matter waves at the 3D Anderson mobility edge in cold-atom disorder quench experiments. General scaling arguments are supported by precision numerics for the spectral function, diffusion coefficient, and…

Quantum Gases · Physics 2016-09-20 Cord A. Müller , Dominique Delande , Boris Shapiro

The wavefunctions of a disordered two-dimensional electron gas at the quantum-critical Anderson transition are predicted to exhibit multifractal scaling in their real space amplitude. We experimentally investigate the appearance of these…

Mesoscale and Nanoscale Physics · Physics 2021-01-13 Berthold Jäck , Fabian Zinser , Elio J. K\" onig , Sune N. P. Wissing , Anke B. Schmidt , Markus Donath , Klaus Kern , Christian R. Ast

We calculate perturbatively the multifractality spectrum of wave-functions in critical random matrix ensembles in the regime of weak multifractality. We show that in the leading order the spectrum is universal, while the higher order…

Disordered Systems and Neural Networks · Physics 2015-05-27 I. Rushkin , A. Ossipov , Y. V. Fyodorov

The statistical properties of overlap sums of groups of four eigenfunctions of the Anderson model for localization as well as combinations of four eigenenergies are computed. Some of the distributions are found to be scaling functions, as…

Disordered Systems and Neural Networks · Physics 2014-09-16 Erez Michaely , Shmuel Fishman

The exact probability distributions of the resistance, the conductance and the transmission are calculated for the one-dimensional Anderson model with long-range correlated off-diagonal disorder at E=0. It is proved that despite of the…

Disordered Systems and Neural Networks · Physics 2009-11-11 Hosein Cheraghchi , S. Mahdi Fazeli

Under the formalism of annealed averaging of the partition function, a type of random multifractal measures with their multipliers satisfying exponentially distributed is investigated in detail. Branching emerges in the curve of generalized…

Adaptation and Self-Organizing Systems · Physics 2009-10-31 Wei-Xing Zhou , Zun-Hong yu

In contrast to finite dimensions where disordered systems display multifractal statistics only at criticality, the tree geometry induces multifractal statistics for disordered systems also off criticality. For the Anderson tight-binding…

Disordered Systems and Neural Networks · Physics 2015-03-17 Cecile Monthus , Thomas Garel

By using dimensionless conductances as scaling variables, the conventional one-parameter scaling theory of localization fails for non-reciprocal non-Hermitian systems such as the Hanato-Nelson model. Here, we propose a one-parameter scaling…

Disordered Systems and Neural Networks · Physics 2024-06-05 C. Wang , Wenxue He , X. R. Wang , Hechen Ren

We consider a noninteracting disordered 1D quasicrystal in the weak disorder regime. We show that the critical states of the pure model approach strong localization in strikingly different ways, depending on their renormalization…

Strongly Correlated Electrons · Physics 2019-02-13 Anuradha Jagannathan , Piyush Jeena , Marco Tarzia

Using direct numerical simulations, we study the statistical properties of reversals in two-dimensional Rayleigh-B\'enard convection for infinite Prandtl number. We find that the large-scale circulation reverses irregularly, with the…

Fluid Dynamics · Physics 2018-09-12 Ambrish Pandey , Mahendra K. Verma , Mustansir Barma

An analytical realization is suggested for the finite-size scaling algorithm based on the consideration of auxiliary quasi-1D systems. Comparison of the obtained analytical results with the results of numerical calculations indicates that…

Disordered Systems and Neural Networks · Physics 2009-11-11 I. M. Suslov

The multifractal properties of the Edwards-Anderson order parameter of the short-range Ising spin glass model on d=3 diamond hierarchical lattices is studied via an exact recursion procedure. The profiles of the local order parameter are…

Disordered Systems and Neural Networks · Physics 2009-10-30 E. Nogueira , S. Coutinho , F. D. Nobre , E. M. F. Curado , J. R. L. de Almeida

We explore single-particle Anderson localization due to nonrandom quasiperiodic potentials in two and three dimensions. We introduce a class of self-dual models that generalize the one-dimensional Aubry-Andr\'e model to higher dimensions.…

Statistical Mechanics · Physics 2017-12-13 Trithep Devakul , David A. Huse

We examine statistical fluctuation of eigenvalues from the near-edge bulk of QCD Dirac spectra above the critical temperature. For completeness we start by reviewing on the spectral property of Anderson tight-binding Hamiltonians as…

High Energy Physics - Lattice · Physics 2013-12-18 Shinsuke M. Nishigaki , Matteo Giordano , Tamas G. Kovacs , Ferenc Pittler

The statistics of wavefunctions in the one-dimensional (1d) Anderson model of localization is considered. It is shown that at any energy that corresponds to a rational filling factor f=p/q there is a statistical anomaly which is seen in…

Disordered Systems and Neural Networks · Physics 2015-05-13 V. E. Kravtsov , V. I. Yudson