ABOUT THE CORRELATION LENGTHS OF QUANTUM HEISENBERG FERRO AND ANTIFERROMAGNETS
- 10 April 1991
- journal article
- research article
- Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters B
- Vol. 05 (08) , 593-596
- https://doi.org/10.1142/s021798499100071x
Abstract
The mass gap for the two-dimensional O (3) non-linear sigma model has been recently extracted from the Bethe Ansatz solution. Combining this result with the Renormalization Group treatment of the Quantum Heisenberg Ferromagnet as well as the Quantum non-linear sigma model we present new formulas for the correlation length of the square lattice quantum ferro and antiferromagnet.Keywords
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