DIRECTED POLYMER MELTS AND QUANTUM CRITICAL PHENOMENA

被引：18

作者：

KAMIEN, RD ^{[1
]}

NELSON, DR ^{[1
]}

机构：

[1] HARVARD UNIV,LYMAN LAB PHYS,CAMBRIDGE,MA 02138

来源：

JOURNAL OF STATISTICAL PHYSICS | 1993年 / 71卷 / 1-2期

关键词：

QUANTUM CRITICAL PHENOMENA; DIRECTED POLYMERS; CRITICAL MIXING; PHASE TRANSITIONS;

D O I：

10.1007/BF01048086

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The statistical mechanics of directed linelike objects, such as directed polymers in an external field, strands of dipoles in both ferro- and electrorheological fluids, and flux lines in high-T(C) superconductors, bears a close resemblance to the quantum mechanics of bosons in 2 + 1 dimensions. We show that single-component and binary mixture critical phenomena in these systems are in the universality class of three-dimensional uniaxial dipolar ferromagnets and ferroelectrics. Our results also apply to films of two superfluid species undergoing phase separation well below their lambda-points near T = 0. In the case of directed polymers and electrorheological fluids we analyze the effects of free ends occurring in the sample as well as a novel directionally-dependent compressibility.

引用

页码：23 / 50

页数：28

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