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We study the fluid flow through disordered porous media by numerically solving the complete set of the Navier-Stokes equations in a two dimensional lattice with a spatially random distribution of solid obstacles (plaquettes). We simulate…

无序系统与神经网络 · 物理学 2015-06-25 U. M. S. Costa , J. S. Andrade , H. A. Makse , H. E. Stanley

We describe a many-body theory for interlayer dispersion forces between weakly disordered atomically thin crystals and numerically investigate the role of disorder for different layer-separation distances and for different densities of…

强关联电子 · 物理学 2021-11-04 Jonas von Milczewski , John R. Tolsma

In this work, we study long-time wave transport in correlated and uncorrelated disordered 2D arrays. When a separation of dimensions is applied to the model, we find that the predicted 1D random dimer phenomenology also appears in so-called…

无序系统与神经网络 · 物理学 2015-02-11 Uta Naether , Cristian Mejía-Cortés , Rodrigo A. Vicencio

We study numerically the effects of short- and long-range correlations on the localization properties of the eigenstates in a one-dimensional disordered lattice characterized by a random non-Hermitian Hamiltonian, where the imaginary part…

无序系统与神经网络 · 物理学 2020-06-05 Ba Phi Nguyen , Thi Kim Thoa Lieu , Kihong Kim

We calculate the persistent current of 1D rings of spinless fermions with short-range interactions on a lattice with up to 20 sites, and in the presence of disorder, for various band fillings. We find that {\it both} disorder and…

凝聚态物理 · 物理学 2009-10-22 G. Bouzerar , D. Poilblanc , G. Montambaux

How the vortex lattice orders at long range in a layered superconductor with weak point pinning centers is studied through a duality analysis of the corresponding frustrated XY model. Vortex-glass order emerges out of the vortex liquid…

超导电性 · 物理学 2007-05-23 J. P. Rodriguez

Recent work has highlighted the remarkable properties of quantum turbulence in superfluid helium II, consisting of a disordered tangle of quantised vortex lines which interact with each other and reconnect when they collide. According to…

流体动力学 · 物理学 2025-11-04 Luca Galantucci , Giorgio Krstulovic , Carlo F Barenghi

We investigate a quantum Heisenberg model with both antiferromagnetic and disordered nearest-neighbor couplings. We use an extended dynamical mean-field approach, which reduces the lattice problem to a self-consistent local impurity problem…

无序系统与神经网络 · 物理学 2009-11-13 S. Burdin , D. R. Grempel , M. Grilli

We examine the manner in which a linear potential results from fluctuations due to vortices linked with the Wilson loop. Our discussion is based on exact relations and inequalities between the Wilson loop and the vortex and electric flux…

高能物理 - 格点 · 物理学 2009-11-07 T. G. Kovacs , E. T. Tomboulis

A detailed numerical study of the real space configuration of vortices in disordered superconductors using 2D London-Langevin model is presented. The magnetic field $B$ is varied between 0 and $B_{c2}$ for various pinning strengths…

超导电性 · 物理学 2009-11-10 Mahesh Chandran , R. T. Scalettar , G. T. Zimanyi

In ordinary solids, material disorder is known to increase the size of the process zone in which stress concentrates at the crack tip, causing a transition from localized to diffuse failure. Here, we report experiments on disordered 2D…

We study the spreading of correlations and other physical quantities in quantum lattice models with interactions or hopping decaying like $r^{-\alpha}$ with the distance $r$. Our focus is on exponents $\alpha$ between 0 and 6, where the…

量子物理 · 物理学 2015-06-19 David-Maximilian Storch , Mauritz van den Worm , Michael Kastner

It is commonly accepted that the peak effect (PE) in the critical current density of type II superconductors is a consequence of an order-disorder transition in the vortex lattice (VL). Examination of vortex lattice configurations (VLCs) in…

超导电性 · 物理学 2009-11-13 G. Pasquini , D. Perez Daroca , C. Chiliotte , G. S. Lozano , V. Bekeris

The vortex lattice (VL) symmetry and orientation in clean type-II superconductors depends sensitively on the host material anisotropy, vortex density and temperature, frequently leading to rich phase diagrams. Typically, a well-ordered VL…

We study the problem of diffusing particles which coalesce upon contact. With the aid of a non-perturbative renormalization group, we first analyze the dynamics emerging below the critical dimension two, where strong fluctuations imply…

统计力学 · 物理学 2013-02-26 Anton A. Winkler , Erwin Frey

We study a flux lattice which is parallel to superconducting layers, allowing for dislocations and for disorder of both short wavelength and long wavelength. We find that the long wavelength disorder has a significant effect on the phase…

超导电性 · 物理学 2009-10-30 Anatoly Golub , Baruch Horovitz

Using numerical simulations of magnetically interacting vortices in disordered layered superconductors we obtain the static vortex phase diagram as a function of magnetic field and temperature. For increasing field or temperature, we find a…

超导电性 · 物理学 2009-10-31 C. J. Olson , C. Reichhardt , R. T. Scalettar , G. T. Zimanyi , N. Gronbech-Jensen

Lieb-Robinson-type bounds are reported for a large class of classical Hamiltonian lattice models. By a suitable rescaling of energy or time, such bounds can be constructed for interactions of arbitrarily long range. The bound quantifies the…

统计力学 · 物理学 2014-05-30 David Métivier , Romain Bachelard , Michael Kastner

We study the effects of disorders on the transport through small interacting systems based on a two-dimensional Hubbard cluster of finite size connected to two noninteracting leads. This system can be regarded as a model for the…

介观与纳米尺度物理 · 物理学 2015-06-24 Yoshihide Tanaka , Akira Oguri

We report on critical currents and voltage noise measurements in Niobium strips in the superconducting state, in the presence of a bulk vortex lattice ($B < B_{C2}$) and in the surface superconducting state ($B_{c2}< B < B_{C3}$). For…

超导电性 · 物理学 2009-11-11 J. Scola , A. Pautrat , C. Goupil , Ch. Simon