Bicritical point and crossover in a two-temperature, diffusive kinetic Ising model
Journal Article
·
· Physical Review Letters; (United States)
- Center for Stochastic Processes in Science and Engineering, and Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 (United States)
The phase diagram of a two-temperature kinetic Ising model which evolves by Kawasaki dynamics is studied using Monte Carlo simulations in dimension [ital d]=2 and solving mean-spherical approximation in general [ital d]. We show that the equal-temperature (equilibrium) Ising critical point is a bicritical point where two nonequilibrium critical lines meet a first-order line separating two distinct ordered phases. The shape of the nonequilibrium critical lines is described by a crossover exponent, [ital cphi], which we find to be equal to the susceptibility exponent, [gamma], of the Ising model.
- OSTI ID:
- 7224746
- Journal Information:
- Physical Review Letters; (United States), Vol. 73:10; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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