Static and dynamic critical behaviour of displacive phase transition at Tcin 1/n expansion
- 1 July 1975
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 8 (7) , 1115-1124
- https://doi.org/10.1088/0305-4470/8/7/014
Abstract
Quantum effects on the static critical behaviour of an isotropic n-vector model undergoing a displacement-type phase transition are studied at Tc and to O(1/n). For Tc not=0 there is no quantum effect on eta , and for Tc=0 one gets eta =0 for d>3, and for 2<d<3 eta is due to quantum fluctuations, implying that it assumes a different value than in the classical case. The dynamical behaviour of the system violates the dynamic scaling hypothesis.Keywords
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