Using mean-field renormalization group (MFRG) and surface-bulk mean-field renormalization group (SBMFRG) methods, we study the critical properties of classical Heisenberg and XY models. We show the exact result that there is no finite temperature phase transition in one dimension and very good value
โฆ LIBER โฆ
Critical properties of the classical XY and classical Heisenberg models: A renormalization group study
โ Scribed by J.Ricardo de Sousa; Douglas F. de Albuquerque
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 465 KB
- Volume
- 236
- Category
- Article
- ISSN
- 0378-4371
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We extend our own previous applications of the microscopic coupled-cluster method (CCM) to quantum antiferromagnets. In particular, we carry out a systematic calculation involving high-order multispin correlations for the spin-f anisotropic Heisenberg models on the one-dimensional chain and the two-