Experimental determination of the non-extensive entropic parameter $q$
Statistical Mechanics
2009-11-11 v1 Strongly Correlated Electrons
Abstract
We show how to extract the parameter from experimental data, considering an inhomogeneous magnetic system composed by many Maxwell-Boltzmann homogeneous parts, which after integration over the whole system recover the Tsallis non-extensivity. Analyzing the cluster distribution of LaSrMnO manganite, obtained through scanning tunnelling spectroscopy, we measure the parameter and predict the bulk magnetization with good accuracy. The connection between the Griffiths phase and non-extensivity is also considered. We conclude that the entropic parameter embodies information about the dynamics, the key role to describe complex systems.
Cite
@article{arxiv.cond-mat/0512208,
title = {Experimental determination of the non-extensive entropic parameter $q$},
author = {M. S. Reis and V. S. Amaral and R. S. Sarthour and I. S. Oliveira},
journal= {arXiv preprint arXiv:cond-mat/0512208},
year = {2009}
}
Comments
Submitted to Phys. Rev. Lett