two-dimensional square lattice Ising model is a simple lattice model of interacting magnetic spins, an example of the class of Ising models. The model is notable...
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two-dimensional square-lattice Ising model is one of the simplest statistical models to show a phase transition. Though it is a highly simplified model of a magnetic...
88 KB (13,240 words) - 00:12, 11 June 2025
the Potts model, a generalization of the Ising model, is a model of interacting spins on a crystalline lattice. By studying the Potts model, one may gain...
23 KB (3,645 words) - 09:43, 26 February 2025
Kramers–Wannier duality (category Lattice models)
the free energy of a two-dimensional square-lattice Ising model at a low temperature to that of another Ising model at a high temperature. It was discovered...
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simplest models that shows a phase transition. Lars Onsager famously calculated exactly the free energy of an infinite-sized square-lattice Ising model at zero...
23 KB (2,828 words) - 20:30, 29 November 2024
in physical materials as other lattices, it can still provide useful insight. The Ising model is a mathematical model of ferromagnetism, in which the...
11 KB (1,950 words) - 12:43, 2 June 2025
Baxter in the zero-field case. As with the ice-type models, the eight-vertex model is a square lattice model, where each state is a configuration of arrows...
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found for a few toy models. Some examples include the Bethe ansatz, square-lattice Ising model in zero field, hard hexagon model. Although some problems...
43 KB (5,068 words) - 08:53, 3 June 2025
XY model (sometimes also called classical rotor (rotator) model or O(2) model) is a lattice model of statistical mechanics. In general, the XY model can...
31 KB (4,861 words) - 23:31, 19 June 2025
quantum mechanically. It is related to the prototypical Ising model, where at each site of a lattice, a spin σ i ∈ { ± 1 } {\displaystyle \sigma _{i}\in \{\pm...
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1D Ising model, which is already solved by Ising himself. He then computed the transfer matrix of the "Ising ladder", meaning two 1D Ising models side-by-side...
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{\displaystyle Z_{N}} model (also known as the clock model) is a simplified statistical mechanical spin model. It is a generalization of the Ising model. Although...
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theory via the Ising model. The Kramers–Wannier duality yields the exact location of the critical point for the Ising model on the square lattice. Wannier received...
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atom or particle). This contrasts with a nearest-neighbour model, such as the Ising model, in which the energy, and thus the Boltzmann weight of a statistical...
10 KB (1,889 words) - 17:44, 29 August 2023
Glauber dynamics (category Spin models)
simulate the Ising model (a model of magnetism) on a computer. The algorithm is named after Roy J. Glauber. The Ising model is an abstract model for the magnetic...
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frequently employed to study lattice models, including the Hubbard model, Ising model, Heisenberg model, t-J model, and SYK model. After determining the eigenstates...
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On a square lattice, symmetries guarantee that the coefficients Zi of the derivative terms are all equal. But even for an anisotropic Ising model, where...
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(percolation) first occurs. The most common percolation model is to take a regular lattice, like a square lattice, and make it into a random network by randomly...
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Percolation theory (section Different models)
the Fortuin–Kasteleyn random cluster model, which has many connections with the Ising model and other Potts models. Bernoulli (bond) percolation on complete...
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Domino tiling (redirect from Dimer model)
of the fully-frustrated Ising model on a two-dimensional periodic lattice. At the ground state, each plaquette of the spin model must contain exactly one...
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Spin glass (redirect from Edwards–Anderson model)
Ising model. In this model, we have spins arranged on a d {\displaystyle d} -dimensional lattice with only nearest neighbor interactions. This model can...
37 KB (4,932 words) - 18:51, 28 May 2025
Quantum chromodynamics (section Lattice QCD)
Toulouse, G. (1977). "Theory of the frustration effect. II. Ising spins on a square lattice". Journal of Physics C: Solid State Physics. 10 (18): 537....
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Scale invariance (section The Ising model)
the Ising model lattice. So this anomalous dimension in the conformal field theory is the same as a particular critical exponent of the Ising model phase...
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Directed percolation (section Lattice models)
This model is a directed variant of ordinary (isotropic) percolation and can be introduced as follows. The figure shows a tilted square lattice with bonds...
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Integrable system (redirect from Exactly solvable model)
statistical lattice models 8-vertex model Gaudin model Ising model in 1- and 2-dimensions Ice-type model of Lieb Quantum Heisenberg model Hitchin system...
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etc. the random cluster model is a random graph that generalizes and unifies the Ising model, Potts model, and percolation model. It is used to study random...
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Geometrical frustration (redirect from Frustrated triangular lattice)
studied even before. Early work includes a study of the Ising model on a triangular lattice with nearest-neighbor spins coupled antiferromagnetically...
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dimensions or when exact solutions are known such as the two-dimensional Ising model. The theoretical treatment in generic dimensions requires the renormalization...
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Catalan polyhedra and tilings, p288 table) Stephenson, John (1970), "Ising Model with Antiferromagnetic Next-Nearest-Neighbor Coupling: Spin Correlations...
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The spherical model is a model of ferromagnetism similar to the Ising model, which was solved in 1952 by T. H. Berlin and M. Kac. It has the remarkable...
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