SIGNATURES OF UNSTABLE PARTICLES IN FINITE VOLUME

被引：288

作者：

LUSCHER, M

机构：

[1] Deutsches Elektronen-Synchroton, DESY, D-2000 Hamburg 52

来源：

NUCLEAR PHYSICS B | 1991年 / 364卷 / 01期

关键词：

D O I：

10.1016/0550-3213(91)90584-K

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：

Unstable particles (resonances) occur in QCD, the Higgs model and many other quantum field theories of interest. Since they are a dynamical phenomenon, showing up in scattering processes of stable particles, it is not obvious how to extract their masses from numerical simulations of the theory in euclidean space. For resonances in the elastic region, a solution to this problem is proposed here on the basis of a recently established relation between the scattering matrix in infinite volume and the two-particle energy spectrum in a periodic box.

引用

页码：237 / 251

页数：15

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