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Using Monte Carlo simulations, we have studied isothermal aging of three-dimensional Ising spin-glass model focusing on quasi-equilibrium behavior of the spin auto-correlation function. Weak violation of the time translational invariance in…

无序系统与神经网络 · 物理学 2009-10-31 Tatsuo Komori , Hajime Yoshino , Hajime Takayama

We discuss a system of dilute Bose gas confined in a layered structure of stacked square lattices (slab geometry). A derived phase diagram reveals a non-monotonic dependence of the ratio of tunneling to on-site repulsion on the artificial…

量子气体 · 物理学 2011-02-17 T. A. Zaleski , T. P. Polak

Kinetic facilitated models and the Mode Coupling Theory (MCT) model B are within those systems known to exhibit a discontinuous dynamical transition with a two step relaxation. We consider a general scaling approach, within mean field…

统计力学 · 物理学 2016-05-26 Antonio de Candia , Annalisa Fierro , Antonio Coniglio

We present results from simulations of the gauge glass model in three dimensions using the parallel tempering Monte Carlo technique. Critical fluctuations should not affect the data since we equilibrate down to low temperatures, for…

无序系统与神经网络 · 物理学 2007-05-23 Helmut G. Katzgraber , A. P. Young

The non equilibrium relaxational dynamics of the solid on solid model on a disordered substrate and the Sine Gordon model with random phase shifts is studied numerically. Close to the super-roughening temperature $T_g$ our results for the…

无序系统与神经网络 · 物理学 2009-11-10 Gregory Schehr , Heiko Rieger

For the Ising model with Gaussian random coupling of average $J_0$ and unit variance, the zero-temperature spinglass-ferromagnetic transition as a function of the control parameter $J_0$ can be studied via the size-$L$ dependent…

无序系统与神经网络 · 物理学 2014-05-15 Cecile Monthus , Thomas Garel

We present numerical evidence that the techniques of conformal field theory might be applicable to two-dimensional Ising spin glasses with Gaussian bond distributions. It is shown that certain domain wall distributions in one geometry can…

无序系统与神经网络 · 物理学 2009-11-11 C. Amoruso , A. K. Hartmann , M. B. Hastings , M. A. Moore

We study the statistical mechanics and the equilibrium dynamics of a system of classical Heisenberg spins with frustrated interactions on a $d$-dimensional simple hypercubic lattice, in the limit of infinite dimensionality $d \to \infty$.…

无序系统与神经网络 · 物理学 2024-04-25 Achille Mauri , Mikhail I. Katsnelson

Using an efficient one and two qubit gate simulator, operating on graphical processing units, we investigate ergodic properties of a quantum Ising spin 1/2 model on a two dimensional lattice, which is periodically driven by a…

统计力学 · 物理学 2015-01-07 Carlos Pineda , Tomaž Prosen , Eduardo Villaseñor

Reproducing the key features of fracture behavior under multiaxial stress states is essential for accurate modeling. Experimental evidence indicates that three intrinsic material properties govern fracture nucleation in elastic materials:…

We show that the spatial dimensionality of the quantum critical point associated with Bose--Einstein condensation at T=0 is reduced when the underlying lattice comprises a set of layers coupled by a frustrating interaction. For this…

强关联电子 · 物理学 2009-11-13 J. Schmalian , C. D. Batista

Under decompression, disordered solids undergo an unjamming transition where they become under-coordinated and lose their structural rigidity. The mechanical and vibrational properties of these materials have been an object of theoretical,…

软凝聚态物质 · 物理学 2024-01-17 Julia A. Giannini , Edan Lerner , Francesco Zamponi , M. Lisa Manning

We study the infinite temperature dynamics of a prototypical one-dimensional system expected to exhibit many-body localization. Using numerically exact methods, we establish the dynamical phase diagram of this system based on the statistics…

无序系统与神经网络 · 物理学 2015-03-18 Yevgeny Bar Lev , Guy Cohen , David R. Reichman

We study the thermodynamics of disordered elastic systems, applied to vortex lattices in the Bragg glass phase. Using the replica variational method we compute the specific heat of pinned vortons in the classical limit. We find that the…

凝聚态物理 · 物理学 2009-11-10 Gregory Schehr , Thierry Giamarchi , Pierre Le Doussal

We propose and test a scheme for entanglement renormalization capable of addressing large two-dimensional quantum lattice systems. In a translationally invariant system, the cost of simulations grows only as the logarithm of the lattice…

强关联电子 · 物理学 2013-05-29 Glen Evenbly , Guifre Vidal

We analyse the effect of thermal fluctuations on the elastic constants of the decoupled lamellar phase of tethered, crystalline membranes. Using a momentum-shell renormalization group technique, we show that the smectic-A -like…

软凝聚态物质 · 物理学 2007-05-23 Yashodhan Hatwalne , Sriram Ramaswamy

We study normal state properties of an interacting Fermi gas in an isotropic harmonic trap of arbitrary dimensions. We exactly calculate the first-order perturbation terms in the ground state energy and chemical potential, and obtain simple…

统计力学 · 物理学 2009-11-07 Hiroyuki Yoshimoto , Susumu Kurihara

We present the first neutron inelastic scattering results on the low temperature magnetic state of the three dimensional hyperkagom\'e compound Gd$_{3}$Ga$_{5}$O$_{12}$ (GGG). GGG is often classified as a strongly frustrated system with a…

强关联电子 · 物理学 2010-04-26 P. P. Deen , O. A. Petrenko , G. Balakrishnan , B. D. Rainford , C. Ritter , L. Capogna , H. Mutka , T. Fennell

We present a three-dimensional lattice-gas model with trivial thermodynamics, but nontrivial dynamics. The model is characterized by each particle having its own random energy landscape. The equilibrium dynamics of the model were…

软凝聚态物质 · 物理学 2012-03-27 Ulf R. Pedersen , Tina Hecksher , Jeppe C. Dyre , Thomas B. Schrøder

We consider the dynamics of $N$ interacting bosons in three dimensions which are strongly confined in one or two directions. We analyze the two cases where the interaction potential $w$ is rescaled by either $N^{-1}w(\cdot)$ or…

数学物理 · 物理学 2014-12-11 Johannes von Keler
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