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Universality class of a reentrant phase transition in a frustrated Ising model

✍ Scribed by Hitoshi Asakawa; Masuo Suzuki

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
348 KB
Volume
229
Category
Article
ISSN
0378-4371

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✦ Synopsis

A reentrant phase transition in a frustrated Ising model is studied. By the finite-size scaling technique based on the conformal field theory, the universality class of the present phase transition is discussed. Our results suggest that the universality class of the present model is the same as that of the ordinary two-dimensional Ising model.

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We investigate the quantum phase transition in the random transverse-field Ising model under the influence of Ohmic dissipation. To this end, we numerically implement a strong-disorder renormalization-group scheme. We find that Ohmic dissipation destroys the quantum critical point and the associated