TRUNCATED-FERMIONIC-SPACE APPROACH TO THE CRITICAL 2D ISING-MODEL WITH MAGNETIC-FIELD

被引：111

作者：

YUROV, VP

ZAMOLODCHIKOV, AB

机构：

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 1991年 / 6卷 / 25期

关键词：

D O I：

10.1142/S0217751X91002161

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The critical Ising model perturbed by the spin field (conjugated to the magnetic field) is studied numerically by the method of truncated fermionic space of states. The matrix elements of the perturbed Hamiltonian are found between the states of free Majorana fermions living on a finite-length circle. The Hamiltonian spectrum is studied numerically in the level-5 truncated space. Reasonable estimations are obtained for the vacuum energy, a part of the mass spectrum and the simplest scattering amplitude of the perturbed system.

引用

页码：4557 / 4578

页数：22