Abstract
Exact renormalization group equations are derived for a position-space renormalization of spin systems with weak long-range forces. It is shown how an apparent dependence of the critical exponents on the choice of the renormalization group can be resolved via the mechanism of “dangerous irrelevant variables” and that this same mechanism is responsible for the breakdown of hyperscaling. The dimensiond=4 can be seen to be a borderline dimension above which classical critical exponents are expected.
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References
L. P. Kadanoffet al., Rev. Mod. Phys. 39:395 (1967).
M. E. Fisher,J. Appl. Phys. 38:981 (1967).
M. E. Fisher,Rev. Mod. Phys. 46:597 (1974).
M. E. Fisher,Renormalization Group Methods in Statistical Physics and Field Theory (Proc. Conference Temple University), M. S. Green and J. D. Gunton, eds. (1973).
P. C. Hemmer and J. L. Lebowitz, inPhase Transitions and Critical Phenomena, C. Domb and M. S. Green, eds. (Academic, New York, 1976), Vol. 5B, p. 107.
Th. Niemeijer and J. M. J. van Leeuwen, inPhase Transitions and Critical Phenomena, C. Domb and M. S. Green, eds. (Academic, New York, 1976), Vol. 6.
F. J. Wegner,Phys. Rev. B 5:4529 (1972).
K. G. Wilson and J. Kogut,Phys. Rep. 12C:75 (1974).
F. J. Wegner,J. Phys. C 7:2098 (1974).
L. P. Kadanoff and A. Houghton,Phys. Rev. B 11:377 (1975).
H. E. Stanley,Introduction to Phase Transitions and Critical Phenomena (Oxford Univ. Press, Oxford, 1971).
K. G. Wilson,Phys. Rev. B 4:3184 (1971).
Th. Niemeyer and J. M. J. van Leeuwen,Physica 71:17 (1974).
S. Ma,Rev. Mod. Phys. 45:589 (1973).
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Knops, H.J.F., van Leeuwen, J.M.J. & Hemmer, P.C. Position-space renormalization for systems with weak long-range interactions and the breakdown of hyperscaling. J Stat Phys 17, 197–214 (1977). https://doi.org/10.1007/BF01040102
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DOI: https://doi.org/10.1007/BF01040102