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Variational Principles and Approximate Renormalization Group Calculations

Kadanoff, Leo P.·1975·Physical Review Letters

Abstract

Approximate recursion relations which give upper and lower bounds on the free energy are described. "Optimal" calculations of the free energy can then be obtained by treating parameters within the renormalization equations variationally. As an example, simple lower-bound relations are defined for the two- and three-dimensional Ising models. At the fixed point, a parameter is set variationally, and then critical indices are calculated.

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Metadata

Authors
Kadanoff, L. P.
Venue
Physical Review Letters
Published
1975-04-21
Volume
34
Issue
16
Pages
1005-1008
ISSN
0031-9007 (ISSN-L)
OpenAlex
W1967003412
Cited by
172
References
0
FWCI
14.69
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Variational Principles and Approximate Renormalization Group Calculations. https://app.cochat.ai/papers/10.1103/physrevlett.34.1005
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Kadanoff, L. P. (1975). Variational Principles and Approximate Renormalization Group Calculations. Physical Review Letters. https://doi.org/10.1103/physrevlett.34.1005

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