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Convexity of the free energy in some real-space renormalization-group approximations

Physical Review B, ISSN: 0163-1829, Vol: 28, Issue: 7, Page: 3864-3865
1983
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    27
    • Citation Indexes
      27
  • Captures
    3

Article Description

Whereas the free energy for a spin system in a hierarchical lattice will be convex as a function of appropriate parameters (and thus the heat capacity positive, etc.), the same need not be true of a corresponding approximate real-space renormalization-group method applied to a Bravais lattice. Some examples are given which illustrate this point. © 1983 The American Physical Society.

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