Calculation Method for the Three-Dimensional Ising Ferromagnet Thermodynamics within the Frames of $ρ^6$ Model
Calculation of thermodynamic functions of the three-dimensional Ising ferromagnet above and below critical temperature is performed in the approximation of sixfold basis distribution ($ρ^6$ model). Comparison with the results for the $ρ^4$ model indicates that dependence of the thermodynamic functions on the renormalization group parameter $s$ becomes weaker. The optimal interval of the renormalization group parameter values is determined.
cond-mat.stat-mech↗