Results 41 to 50 of about 56,836 (316)
Exact finite-size corrections for the square-lattice Ising model with Brascamp-Kunz boundary conditions. [PDF]
Physical review. E, Statistical, nonlinear, and soft matter physics, 2002 Finite-size scaling, finite-size corrections, and boundary effects for critical systems have attracted much attention in recent years. Here we derive exact finite-size corrections for the free energy F and the specific heat C of the critical ...
N. Izmailian, K. Oganesyan, Chin-Kun Hu
semanticscholar +1 more source
Application of convolutional neural networks to spin models studies
St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2022 Nowadays, methods and techniques of Deep Learning are being used in various scientific areas. In this paper, the applying of convolutional neural network was considered in frame of problems from statistical physics and computer simulation of magnetic ...
Perzhu Aleksandr +5 more
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SciPost Physics, 2017 The Algorithms for Lattice Fermions package provides a general code for the finite temperature auxiliary field quantum Monte Carlo algorithm. The code is engineered to be able to simulate any model that can be written in terms of sums of single-body ...
Martin Bercx, Florian Goth, Johannes S. Hofmann, Fakher F. Assaad
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Quantum algorithms for classical lattice models [PDF]
, 2011 We give efficient quantum algorithms to estimate the partition function of (i) the six vertex model on a two-dimensional (2D) square lattice, (ii) the Ising model with magnetic fields on a planar graph, (iii) the Potts model on a quasi 2D square lattice,
Cuevas, G. De las +3 more
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Fermions as generalized Ising models
Nuclear Physics B, 2017 We establish a general map between Grassmann functionals for fermions and probability or weight distributions for Ising spins. The equivalence between the two formulations is based on identical transfer matrices and expectation values of products of ...
C. Wetterich
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Fisher zeros and persistent temporal oscillations in nonunitary quantum circuits
Physical Review Research, 2022 We present a quantum circuit with measurements and postselection that exhibits a panoply of space- and/or time-ordered phases from ferromagnetic order to spin-density waves to time crystals. Unlike the time crystals that have been found in unitary models,
Sankhya Basu +4 more
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Fully Frustrated Ising Model on a Square Lattice [PDF]
Progress of Theoretical Physics Supplement, 1986 We investigate a fully frustrated Ising model with four nearest-neighbor interaction constants on a square lattice. We obtain an exact form of the partition function by using a decimation transformation and a dual transformation. The partition function is then expressed as a product of two partition functions each of which is the one of the Ising model
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Two dimentional lattice vibrations from direct product representations of symmetry groups
International Journal of Mathematics and Mathematical Sciences, 1983 Arrangements of point masses and ideal harmonic springs are used to model two dimensional crystals. First, the Born cyclic condition is applied to a double chain composed of coupled linear lattices to obtain a cylindrical arrangement.
J. N. Boyd, P. N. Raychowdhury
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Efficient variational contraction of two-dimensional tensor networks with a non-trivial unit cell [PDF]
Quantum, 2020 Tensor network states provide an efficient class of states that faithfully capture strongly correlated quantum models and systems in classical statistical mechanics.
A. Nietner +4 more
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Anisotropic scaling of the two-dimensional Ising model II: surfaces and boundary fields
SciPost Physics, 2020 Based on the results published recently [SciPost Phys. 7, 026 (2019)], the influence of surfaces and boundary fields are calculated for the ferromagnetic anisotropic square lattice Ising model on finite lattices as well as in the finite-size scaling ...
Hendrik Hobrecht, Alfred Hucht
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