Short-time dynamics of first-order phase transition in a disordered system

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Nonequilibrium short-time dynamics of first-order phase transition in a driven-disordered system at zero temperature is investigated. In a random-bond Ising model under external field, the largest discontinuous jump of order parameter shows a power-law evolution in short times: ΔM (t) ∼ t θ. The scaling exponent θ is equal to (d - β/ν)/z, where d is the dimensionality; β, ν and z are the critical exponents of the system. θ is found to be a universal exponent for any metastable relaxation in the short-time regime. This investigation suggests that the short-time dynamics is valid for the first-order phase transition in the driven disordered system and the critical phenomenon of the disordered system can be understood in the framework of nonequilibrium dynamics.
Original languageEnglish
Pages (from-to)10549-10561
Number of pages13
JournalJournal of Physics A: Mathematical and General
Issue number49
Publication statusPublished - 13 Dec 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Statistical and Nonlinear Physics
  • Mathematical Physics

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