Renormalization-Group Transformations Under Strong Mixing Conditions: Gibbsianness and Convergence of Renormalized Interactions |
| |
Authors: | Bertini Lorenzo Cirillo Emilio N. M. Olivieri Enzo |
| |
Affiliation: | (1) Dipartimento di Matematica, Università di Roma La Sapienza,, 00185 Rome, Italy;(2) CMI, Université de Provence, 13453 Marseille, France;(3) Dipartimento di Matematica, II Università di Roma Tor Vergata, 0133 Rome, Italy |
| |
Abstract: | In this paper we study a renormalization-group map: the block averaging transformation applied to Gibbs measures relative to a class of finite-range lattice gases, when suitable strong mixing conditions are satisfied. Using a block decimation procedure, cluster expansion, and detailed comparison between statistical ensembles, we are able to prove Gibbsianness and convergence to a trivial (i.e., Gaussian and product) fixed point. Our results apply to the 2D standard Ising model at any temperature above the critical one and arbitrary magnetic field. |
| |
Keywords: | renormalization group Gibbsianness finite-size conditions complete analyticity strong mixing equivalence of ensembles Ising model |
本文献已被 SpringerLink 等数据库收录! |
|