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VOLUME 33 (1981) | ISSUE 1 | PAGE 40
Phase transition in the 2D Ising model with impurity bonds
The problem of critical behavior of the 2D Ising model with impurity bonds is solved by using the Feynman-walk method in the 2D lattice. The fluctuational part of specific heat was found to be equal to Cn~ — In ln|r | as r—>0, in contrast to the pure Ising model for which Cn--lnjr |.