Title

Emerging Critical Behavior at a First-Order Phase Transition Rounded by Disorder

Abstract

We investigate the two-dimensional four-color Ashkin-Teller model by means of large-scale Monte-Carlo simulations. We demonstrate that the first-order phase transition of the clean system is destroyed by random disorder introduced via site dilution. The critical behavior of the emerging continuous transition belongs to the clean two-dimensional Ising universality class, apart from logarithmic corrections. These results confirm perturbative renormalization-group predictions; they also agree with recent findings for the three-color case, indicating that the critical behavior is universal.

Department(s)

Physics

Comments

This work was supported in part by the NSF under Grant Nos. DMR-1205803 and DMR-1506152.

Keywords and Phrases

Critical Behavior; Disorder; Phase Transition

International Standard Serial Number (ISSN)

0015-8208; 1521-3978

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Wiley-VCH Verlag, All rights reserved.

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