Journal of Statistical Physics

, Volume 80, Issue 5–6, pp 1309–1326 | Cite as

Low-temperature series for renormalized operators: The ferromagnetic square-lattice Ising model

  • J. Salas


A method for computing low-temperature series for renormalized operators in the two-dimensional Ising model is proposed. These series are applied to the study of the properties of the truncated renormalized Hamiltonians when we start at very low temperature and zero field. The truncated Hamiltonians for majority rule, Kadanoff transformation, and decimation for 2×2 blocks depend on the how we approach the first-order phase-transition line. The renormalization group transformations are multivalued and discontinuous at this first-order transition line when restricted to some finite-dimensional interaction space.

Key Words

Renormalization group position-space renormalization-group transformations Ising model low-temperature expansions 


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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • J. Salas
    • 1
  1. 1.Department of PhysicsNew York UniversityNew York

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