We investigate the temperature-disorder (T-S) phase diagram of a three-dimensional gauge glass model, which is a cubic-lattice nearest-neighbor XY model with quenched random phase shifts A_xy at the bonds, by numerical Monte Carlo simulations. We consider the uncorrelated phase-shift distribution P(A_xy)\sim \exp[(cos A_xy)/S], which has the pure XY model and the uniform distribution of random shifts as extreme cases at S=0 and S->infty respectively, and which gives rise to equal magnetic and overlap correlation functions when T=S. While the high-temperature phase is always paramagnetic, at low temperatures there is a ferromagnetic phase for weak disorder (small S) and a glassy phase at large disorder (large S). These three phases are separated by transition lines with different magnetic and glassy critical behaviors. The disorder induced by the random shifts turns out to be irrelevant at the paramagnetic-ferromagnetic transition line, where the critical behavior belongs to the 3D XY universality class of pure systems; disorder gives only rise to very slowly decaying scaling corrections. The glassy critical behavior along the finite-temperature paramagnetic-glassy transition line belongs to the gauge-glass universality class, with a quite large critical exponent nu=3.2(4). These transition lines meet at a multicritical point M, located at T=S=0.7840(2). The low-temperature ferromagnetic and glassy phases are separated by a third transition line, from M down to the T=0 axis, which is slightly reentrant.
Statistical Gauge Theory of Structural Glasses: Equilibrium Scenarios and Glass-Forming Ability
IMET UB RAS（俄罗斯科学院乌拉尔分院金属物理研究所）；Ural Federal University（乌拉尔联邦大学）；HPPI（高温等离子体物理研究所）；N. L. Dukhov Research Institute of Automatics (VNIIA)（N.L.杜霍夫自动技术研究院）
Typical versus average helicity modulus in the three-dimensional gauge glass: Understanding the vortex glass phase
我们用蒙特卡罗模拟数值计算了三维规玻璃的螺旋度模量。由于平均自由能是独立的扭转角，它是预期的平均螺旋度模量，直接相关的超流密度，消失时进行模拟与周期性的边界条件。对于非零的典型（中值）值，情况不一定如此，因为螺旋度模量在不同无序实现中的分布是非常不对称的。我们表明，螺旋度模量分布的数据很好地描述了一个广义极值分布与非零的位置参数（最可能的值）。位置参数的有限尺寸标度分析产生与以前的结果一致的临界温度和临界指数。这表明位置参数是一个很好的可观测量。关于超流密度是否在涡旋玻璃相中消失，存在着相互矛盾的说法，Fisher等人[Phys. Rev. B 43，130（1991）]认为它是有限的，而Korshunov [Phys. Rev. B 63，174 - 514（2001）]预测它是零。由于规范玻璃常被用来描述高温超导体中的涡旋玻璃，我们根据我们在规范玻璃上的结果讨论了这个问题。
Percolation Thresholds of the Fortuin-Kasteleyn Cluster for a Potts Gauge Glass Model on Complex Networks: Analytical Results on the Nishimori Line
这是由德Arcangelis等人指出的。[Europhys. Lett. 14（1991），515]，正确理解Edwards-Anderson模型中Fortuin-Kasteleyn团簇的渗透现象是重要的，因为由称为汉明距离或损伤的参数表征的动力学转变和渗透转变与自旋之间传播的信号的转变有关。我们分析了Fortuin-Kasteleyn集团的Potts规范玻璃模型，这是一个扩展的模型的爱德华-安德森模型，在随机图与任意度分布的逾渗阈值。结果显示在西森线上。我们还显示了无限范围模型的结果。
The gauge principle as applied in field theories for particle physics recognizes redundant degrees of freedom. Some time ago this author introduced a frustration based locally preferred structure (LPS) model of the glass transition. Here we show that gauge freedom plays an essential role in the self organized emergence of two temperature dependent quantities , which connect the time dependence of the bond angle fluctuations as a given LPS approaches the glass temperature. We show that as a choice of gauge these quantities cooperatively converge as , which is equivalent to the stretched exponen…
Griffiths inequalities and Gibbs-Bogoliubov inequality for general gauge glasses with Gaussian disorder on Nishimori line
Graduate School of Information Sciences, Tohoku University（东北大学信息科学研究院）；School of Computing, Institute of Science Tokyo（东京科学大学理工学院）；Department of Physics, Institute of Science Tokyo（东京科学大学物理系）；Research and Education Institute for Semiconductors and Informatics, Kumamoto University（熊本大学半导体与信息教研院）；Sigma-i Co., Ltd.（Sigma-i有限公司）
We consider magnon excitations in the spin-glass phase of geometrically frustrated antiferromagnets with weak exchange disorder, focussing on the nearest-neighbour pyrochlore-lattice Heisenberg model at large spin. The low-energy degrees of freedom in this system are represented by three copies of a U(1) emergent gauge field, related by global spin-rotation symmetry. We show that the Goldstone modes associated with spin-glass order are excitations of these gauge fields, and that the standard theory of Goldstone modes in Heisenberg spin glasses (due to Halperin and Saslow) must be modified in t…
We propose that the Higgs phase of a gauge Higgs theory is the phase of spontaneously broken custodial symmetry, and present a new gauge invariant order parameter for custodial symmetry breaking which is very closely analogous to the Edwards-Anderson order parameter for spin glasses. Custodial symmetry is a global symmetry acting on the Higgs field alone, and we show here that the spin glass transition in gauge Higgs theories, from a QCD-like phase to a Higgs phase of broken custodial symmetry, coincides with the transition between two distinct types of confinement. These are color confinement…
The understanding of thermodynamic glass transition has been hindered by the lack of proper models beyond mean-field theories. Here, we propose a three-dimensional lattice glass model on a simple cubic lattice that exhibits the typical dynamics observed in fragile supercooled liquids such as two-step relaxation, super-Arrhenius growth in the relaxation time, and dynamical heterogeneity. Using advanced Monte Carlo methods, we compute the thermodynamic properties deep inside the glassy temperature regime, well below the onset temperature of the slow dynamics. The specific heat has a finite jump …
