Yang-Lee zeros and the helix-coil transition in a continuum model of polyalanine

被引：28

作者：

Alves, NA

Hansmann, UHE

机构：

[1] Univ Sao Paulo, FFCLRP, Dept Fis & Matemat, BR-01404090 Ribeirao Preto, SP, Brazil

[2] Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA

来源：

PHYSICA A | 2001年 / 292卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

Yang-Lee zeros; Lee-Yang theorem; helix-coil transition; protein folding; generalized ensemble simulations;

D O I：

10.1016/S0378-4371(00)00603-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the Yang-Lee zeros for characteristic temperatures of the helix-coil transition in a continuum model of polyalanine. The distribution of these zeros differs from predictions of the Zimm-Bragg theory and supports recent claims that polyalanine exhibits a true phase transition. New estimates for critical exponents are presented and the relation of our results to the Lee-Yang theorem is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：509 / 518

页数：10

共 30 条

[1] Partition function zeros and finite size scaling of helix-coil transitions in a polypeptide [J].