Results 51 to 60 of about 146,177 (189)

Inference in Ising models

open access: yesBernoulli, 2018
The Ising spin glass is a one-parameter exponential family model for binary data with quadratic sufficient statistic. In this paper, we show that given a single realization from this model, the maximum pseudolikelihood estimate (MPLE) of the natural parameter is $\sqrt {a_N}$-consistent at a point whenever the log-partition function has order $a_N$ in ...
Bhattacharya, Bhaswar B.   +1 more
openaire   +3 more sources

Transport Properties of a One-Dimensional Two-Component Quantum Liquid with Hyperbolic Interactions

open access: yes, 1994
We present an investigation of the sinh-cosh (SC) interaction model with twisted boundary conditions. We argue that, when unlike particles repel, the SC model may be usefully viewed as a Heisenberg-Ising fluid with moving Heisenberg-Ising spins.
B. Sriram Shastry   +20 more
core   +1 more source

Some Recent Results on Pair Correlation Functions and Susceptibilities in Exactly Solvable Models

open access: yes, 2006
Using detailed exact results on pair-correlation functions of Z-invariant Ising models, we can write and run algorithms of polynomial complexity to obtain wavevector-dependent susceptibilities for a variety of Ising systems.
Au-Yang H   +12 more
core   +1 more source

A note on Ising random currents, Ising-FK, loop-soups and the Gaussian free field

open access: yes, 2015
We make a few elementary observations that relate directly the items mentioned in the title. In particular, we note that when one superimposes the random current model related to the Ising model with an independent Bernoulli percolation model with well ...
Lupu, Titus, Werner, Wendelin
core   +2 more sources

Critical behavior of the geometrical spin clusters and interfaces in the two-dimensional thermalized bond Ising model

open access: yes, 2012
The fractal dimensions and the percolation exponents of the geometrical spin clusters of like sign at criticality, are obtained numerically for an Ising model with temperature-dependent annealed bond dilution, also known as the thermalized bond Ising ...
Davatolhagh, S.   +2 more
core   +1 more source

Equivalence between two-dimensional alternating/random Ising model and the ground state of one-dimensional alternating/random XY chain

open access: yes, 2012
It is derived that the two-dimensional Ising model with alternating/random interactions and with periodic/free boundary conditions is equivalent to the ground state of the one-dimensional alternating/random XY model with the corresponding periodic/free ...
Abraham D. B.   +4 more
core   +1 more source

Transitions and crossover phenomena in fully frustrated XY systems

open access: yes, 2005
We study the two-dimensional fully frustrated XY (FFXY) model and two related models, a discretization of the Landau-Ginzburg-Wilson Hamiltonian for the critical modes of the FFXY model and a coupled Ising-XY model, by means of Monte Carlo simulations on
Andrea Pelissetto   +3 more
core   +1 more source

Surface Reconstruction: Noble Metals

open access: yesУспехи физики металлов, 2001
The paper reviews the most important achievements in the study of the surface-reconstruction phase transition on the low-index single crystals of Pt, Ir, and Au.
M. O. Vasyl'yev, A. B. Bondarchuk, V. A. Tinkov
doaj   +1 more source

Free field realization of the BMS Ising model

open access: yesJournal of High Energy Physics, 2023
In this work, we study the inhomogeneous BMS free fermion theory, and show that it gives a free field realization of the BMS Ising model. We find that besides the BMS symmetry there exists an anisotropic scaling symmetry in BMS free fermion theory.
Zhe-fei Yu, Bin Chen
doaj   +1 more source

Revisiting the combinatorics of the 2D Ising model

open access: yes, 2017
We provide a concise exposition with original proofs of combinatorial formulas for the 2D Ising model partition function, multi-point fermionic observables, spin and energy density correlations, for general graphs and interaction constants, using the ...
Chelkak, Dmitry   +2 more
core   +3 more sources

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