 Calculation of free energy of a three-dimensional Ising-like system in an external field with the use of the ρ6 modelI.V. Pylyuk and M.P. Kozlovskii Physica A: Statistical Mechanics and its Applications, 2010, vol. 389, issue 23, 5390-5401 Abstract: The microscopic approach to calculating the free energy of a three-dimensional Ising-like system in a homogeneous external field is developed in the higher non-Gaussian approximation (the ρ6 model) at temperatures above the critical value of Tc (Tc is the phase-transition temperature in the absence of an external field). The free energy of the system is found by separating the contributions from the short- and long-wave spin-density oscillation modes taking into account both temperature and field fluctuations of the order parameter. Our analytical calculations do not involve power series in the scaling variable and are valid in the whole field–temperature plane near the critical point including the region in the vicinity of the limiting field h̃c, which divides external fields into the weak and strong ones (i.e., the crossover region). Keywords: Ising-like system; External field; Critical point; Free energy (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:389:y:2010:i:23:p:5390-5401 DOI: 10.1016/j.physa.2010.08.022 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 |
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