Answers are grounded in this paper and cite their sources.
In their recent work using the renormalization-group approach, Fisher, Ma, and Nickel derived results for η when there is a long-range interaction, r^-d-σ, which were seemingly at variance with the numerical results of Nagle and Bonner. The problem is the presence of nonthermodynamic terms in the spin-spin correlation function which never-theless contribute to the thermodynamics. We also find that the scaling relation between δ and η fails to hold for d>2σ.
No takes yet. Share an insight, caveat, or question.
Baker et al. (1973) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: