Improved upper bounds on the critical temperature of theising spin chain
- 1 September 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 34 (5) , 3466-3468
- https://doi.org/10.1103/physrevb.34.3466
Abstract
Recent results on the upper-bound property of the magnetization in certain approximations to ferromagnetic spin systems are here used to derive a rigorous upper bound for the critical temperature of the one-dimensional ferromagnetic Ising spin system. We find that . The best previous bound was 0.360. A further improvement by the same technique is possible.
Keywords
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