1998/05/26 by P. Butera, M. Comi · 2 citations
Mathematics · Physics and Astronomy · #Amplitude #Condensed matter physics #Geometry #Mathematical physics #Mathematics #Physics #Physics of Superconductivity and Magnetism #Quantum many-body systems #Quantum mechanics #Scaling #Scaling law #Spin (aerodynamics) #Statistical physics #Theoretical and Computational Physics #Thermodynamics #cond-mat #hep-lat
paper · pdf · doi:10.1103/physrevb.58.11552
published as Phys.Rev. B58 (1998) 11552-11569 · 23 pages, latex, no figures
arxiv created 1998/05/26 · openalex publication_date 1998/11/01 · openalex created_date 2016/06/24 · arxiv updated 2016/09/01 · openalex updated_date 2026/08/05
For the classical N-vector model, with arbitrary N, we have computed through order \ensuremathβ17 the high-temperature expansions of the second field derivative of the susceptibility \ensuremathχ4(N,\ensuremathβ) on the simple cubic and on the body centered cubic lattices. [The N-vector model is also known as the O(N) symmetric classical spin Heisenberg model or, in quantum field theory, as the lattice O(N) nonlinear \ensuremathσ model.] By analyzing the expansion of \ensuremathχ4(N,\ensuremathβ) on the two lattices, and by carefully allowing for the corrections to scaling, we obtain updated estimates of the critical parameters and more accurate tests of the hyperscaling relation d\ensuremathν(N)+\ensuremathγ(N)\ensuremath-2\ensuremathΔ4(N)=0 for a range of values of the spin dimensionality N, including N=0 (the self-avoiding walk model), N=1 (the Ising spin 1/2 model), N=2 (the XY model), N=3 (the classical Heisenberg model). Using the recently extended series for the susceptibility and for the second correlation moment, we also compute the dimensionless renormalized four point coupling constants and some universal ratios of scaling correction amplitudes in fair agreement with recent renormalization group estimates.