The partition function zeros for a Potts model of helix-coil transition with three-site interactions

N. Ananikian, L. Ananikyan, R. Artuso and K. Sargsyan

Physica A: Statistical Mechanics and its Applications, 2008, vol. 387, issue 22, 5433-5439

Abstract: The partition function (Fisher) zeros of the Q-state Potts model with three-site interactions on a zigzag ladder are studied by a transfer-matrix approach. This Q-state model is proposed as a description of helix-coil transition in homopolymers. The Fisher zeros are exactly derived for arbitrary value of the system parameter Q. It is shown that there is only a quasi-phase transition for all temperatures. The dependence of the helix-coil transition on solvent is analyzed using Fisher zeros of the model. The densities of the Fisher zeros are singular at the edge singularity points and the critical exponent σ=−12.

Keywords: Spin models; Partition function zeros; Polypeptides (search for similar items in EconPapers)
Date: 2008
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437108004494
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:387:y:2008:i:22:p:5433-5439

DOI: 10.1016/j.physa.2008.05.020

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().