THE SPIN-SPIN CORRELATION-FUNCTION IN THE 2-DIMENSIONAL ISING-MODEL IN A MAGNETIC-FIELD AT TAU=TAU(C)

被引：133

作者：

DELFINO, G

MUSSARDO, G

机构：

[1] SCH ADV INT STUDIES, I-34014 TRIESTE, ITALY

[2] IST NAZL FIS NUCL, I-34014 TRIESTE, ITALY

来源：

NUCLEAR PHYSICS B | 1995年 / 455卷 / 03期

关键词：

D O I：

10.1016/0550-3213(95)00464-4

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The form-factor bootstrap approach is used to compute the exact contributions in the large-distance expansion of the correlation function (sigma(x)sigma(0)) of the two-dimensional Ising model in a magnetic field at T = T-c, The matrix elements of the magnetization operator sigma(x) present a rich analytic structure induced by the (multi-) scattering processes of the eight massive particles of the model. The spectral representation series has a fast rate of convergence and perfectly agrees with the numerical determination of the correlation function.

引用

页码：724 / 758

页数：35

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