CRITICAL-BEHAVIOR FOR CORRELATED STRONGLY COUPLED BOSON SYSTEMS IN 1+1 DIMENSIONS

被引：26

作者：

BOGOLIUBOV, NM ^{[1
]}

BULLOUGH, RK ^{[1
]}

TIMONEN, J ^{[1
]}

机构：

[1] UNIV JYVASKYLA,DEPT PHYS,SF-40351 JYVASKYLA,FINLAND

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.72.3933

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The natural integrable correlated strongly coupled boson system in 1 + 1 dimensions is the q-boson hopping model; we calculate its critical exponent theta and determine its correlation functions. For small couplings the q-boson model has natural connections with the Bose gas and the XY models of very large spin for which theta's and correlators are reported. For large couplings the hopping model is a new phase of interacting bosons substantially different from the impenetrable Bose gas.

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页码：3933 / 3936

页数：4

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