Finite-size scaling analysis of the decay of an unstable state during a first order phase transition
- Carnegie-Mellon Univ., Pittsburgh, PA (USA). Dept. of Physics
- Pittsburgh Univ., PA (USA). Dept. of Physics and Astronomy
The authors extend standard finite-size scaling methods to study the dynamical evolution of an unstable state far from equilibrium as the system undergoes a first order phase transition. They suggest that the nonequilibrium structure factor S(q,t,L), at late times and for large enough lattice sizes, scales as S(q,t,L) = L/sup d/F(qL, t/sup 1/chi//L). L is the linear dimension of the system and 1/chi is the domain growth exponent. They obtain chi = 2 in the case of the kinetic Ising model with a nonconserved order parameter. For a critical quench in a system with conserved order parameter, scaling of the peak of the structure factor gives 1/chi {approx} 0.27. Higher wavenumbers, however, are more consistent with chi = 3.
- OSTI ID:
- 5707666
- Journal Information:
- Modern Physics Letters B; (USA), Vol. 2:2; ISSN 0217-9849
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL LATTICES
SCALING
ORDER-DISORDER TRANSFORMATIONS
ISING MODEL
LATTICE PARAMETERS
CRYSTAL MODELS
CRYSTAL STRUCTURE
MATHEMATICAL MODELS
PHASE TRANSFORMATIONS
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