Results 31 to 40 of about 24,146,027 (328)

Ising expansion for the Hubbard model [PDF]

open access: yesPhysical Review B, 1995
22 pages, 6 Postscript figures ...
Shi, Zhu-Pei, Singh, Rajiv R. P.
openaire   +3 more sources

Clifford algebra approach of 3D Ising model [PDF]

open access: yesAdvances in Applied Clifford Algebras, 2018
We develop a Clifford algebra approach for 3D Ising model. We first note the main difficulties of the problem for solving exactly the model and then emphasize two important principles (i.e., Symmetry Principle and Largest Eigenvalue Principle) that will ...
Zhidong Zhang, O. Suzuki, N. H. March
semanticscholar   +1 more source

Ordering in Two-Dimensional Ising Models with Competing Interactions [PDF]

open access: yes, 2005
We study the 2D Ising model on a square lattice with additional non-equal diagonal next-nearest neighbor interactions. The cases of classical and quantum (transverse) models are considered.
C. Gros   +21 more
core   +2 more sources

Quantum approximate optimization of the long-range Ising model with a trapped-ion quantum simulator

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance Variational quantum algorithms combine quantum resources with classical optimization methods, providing a promising approach to solve both quantum many-body and classical optimization problems.
G. Pagano   +15 more
semanticscholar   +1 more source

Quantum annealing in the transverse Ising model [PDF]

open access: yes, 1998
We introduce quantum fluctuations into the simulated annealing process of optimization problems, aiming at faster convergence to the optimal state. Quantum fluctuations cause transitions between states and thus play the same role as thermal fluctuations ...
T. Kadowaki, H. Nishimori
semanticscholar   +1 more source

Toward a 3d Ising model with a weakly-coupled string theory dual

open access: yesSciPost Physics, 2020
It has long been expected that the 3d Ising model can be thought of as a string theory, where one interprets the domain walls that separate up spins from down spins as two-dimensional string worldsheets.
Nabil Iqbal, John McGreevy
doaj   +1 more source

Petri Net Modeling for Ising Model Formulation in Quantum Annealing

open access: yesApplied Sciences, 2021
Quantum annealing is an emerging new platform for combinatorial optimization, requiring an Ising model formulation for optimization problems. The formulation can be an essential obstacle to the permeation of this innovation into broad areas of everyday ...
Morikazu Nakamura   +2 more
doaj   +1 more source

Parallel simulation of the Ising model [PDF]

open access: yesPhysical Review E, 1994
Methods for parallelizing Ising model simulations are presented. A parallel single-spin Metropolis algorithm [J. Chem. Phys. 21, 1087 (1953)] has been implemented with a speedup of 27 on 50 processors of the KSR-1 parallel computer. A parallel Swendsen-Wang algorithm [Phys. Rev. Lett.
MACFARLAND, T, Barkema, G.T.
openaire   +3 more sources

(Four) Dual Plaquette 3D Ising Models

open access: yesEntropy, 2020
A characteristic feature of the 3 d plaquette Ising model is its planar subsystem symmetry. The quantum version of this model has been shown to be related via a duality to the X-Cube model, which has been paradigmatic in the new and rapidly ...
Desmond A. Johnston   +1 more
doaj   +1 more source

Macroscopically frustrated Ising model [PDF]

open access: yesPhysical Review E, 2001
A disordered spin glass model where both static and dynamical properties depend on macroscopic magnetizations is presented. These magnetizations interact via random couplings and, therefore, the typical quenched realization of the system exhibit a macroscopic frustration.
Pasquini M, SERVA, Maurizio
openaire   +3 more sources

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