Evidence for Fisher renormalization in the compressible phi(4)-model

Autor(en)

Andreas Tröster

Abstrakt

We present novel Fourier Monte Carlo simulations of a compressible phi(4)-model on a simple-cubic lattice with linear-quadratic coupling of order parameter and strain, focusing on the detection of fluctuation-induced first-order transitions and deviations from standard critical behavior. The former is indeed observed in the constant stress ensemble and for auxetic systems at constant strain, while for regular isotropic systems at constant strain, we find strong evidence for Fisher-renormalized critical behavior and are led to predict the existence of a tricritical point.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie

Journal

Physical Review Letters

Band

100

Anzahl der Seiten

4

ISSN

0031-9007

DOI

https://doi.org/10.1103/PhysRevLett.100.140602

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103009 Festkörperphysik, 103029 Statistische Physik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/729814ed-6984-4000-af0a-8e2d68184d5b