DERIVING BOUNDARY S-MATRICES

被引：86

作者：

FENDLEY, P

SALEUR, H

机构：

[1] UNIV SO CALIF, DEPT PHYS, LOS ANGELES, CA 90089 USA

[2] UNIV SO CALIF, DEPT MATH, LOS ANGELES, CA 90089 USA

来源：

NUCLEAR PHYSICS B | 1994年 / 428卷 / 03期

关键词：

D O I：

10.1016/0550-3213(94)90369-7

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：

We show how to derive exact boundary S matrices for integrable quantum field theories in 1 + 1 dimensions using lattice regularization. We do this calculation explicitly for the sine-Gordon model with fixed boundary conditions using the Bethe ansatz for an XXZ-type spin chain in a boundary magnetic field. Our results agree with recent conjectures of Ghoshal and Zamolodchikov, and indicate that the only solutions to the Bethe equations which contribute to the scaling limit are the standard strings.

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收藏

页码：681 / 693

页数：13

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