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Fourier Transform of Transfer Matrices of Plane Ising Models

Преобразование Фурье трансфер-матриц плоских моделей Изинга
Authors: Khrapov, P.V.;

Fourier Transform of Transfer Matrices of Plane Ising Models

Abstract

This work demonstrates the Fourier transform of the elementary transfer matrix of the generalized twodimensional Ising model with special boundary conditions with a shift (screw type) with the form of a Hamiltonian covering the classical Ising model with an external field, as well as models equivalent to models on a triangular lattice with a chessboard type Hamiltonian (the author plans to consider the general form of interaction in the following publication). Its limit representation is obtained in the form of a sum of integral operators with the size of the system tending to infinity. This allows the actual problem of finding the maximum eigenvalue of the limiting elementary transfer matrix (its Napierian logarithm is equal to the free energy of the system) to be brought to finding the maximum eigenvalue of the sum of integral operators of a fairly simple form. This approach can help solve the problems associated with the large size of the transfer matrices. В работе сделано преобразование Фурье элементарной трансферматрицы обобщенной двумерной модели Изинга со специальными граничными условиями со сдвигом (типа винтовых)с видом гамильтониана, охватывающем классическую модель Изинга с внешним полем, а также модели, эквивалентные моделям на треугольной решетке с гамильтонианом шахматного типа (общий вид взаимодействия автор планирует рассмотреть в следующей публикации). Получено ее предельное представление в виде суммы интегральных операторовпри размерах системы, стремящихся к бесконечности. Это позволяет актуальную задачу нахождения максимального собственного значения предельной элементарной трансферматрицы (ее натуральный логарифм равен свободной энергии системы) свести к нахождению максимального собственного значения суммы интегральных операторов достаточно простого вида. Такой подход может помочь снять проблемы, связанные с большим размером трансферматриц.

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Keywords

partition function, hamiltonian, generalized ising model, QA75.5-76.95, free energy, свободная энергия, Hamiltonian, generalized Ising model, элементарная трансфер-матрица, Electronic computers. Computer science, elementary transfer matrix, обобщенная модель Изинга, гамильтониан, статистическая сумма

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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