Landau-like theory for universality of critical exponents in quasistationary states of isolated mean-field systems.

  title={Landau-like theory for universality of critical exponents in quasistationary states of isolated mean-field systems.},
  author={Shun Ogawa and Yoshiyuki Y. Yamaguchi},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  volume={91 6},
  • Shun OgawaY. Yamaguchi
  • Published 4 December 2014
  • Physics
  • Physical review. E, Statistical, nonlinear, and soft matter physics
An external force dynamically drives an isolated mean-field Hamiltonian system to a long-lasting quasistationary state, whose lifetime increases with population of the system. For second order phase transitions in quasistationary states, two nonclassical critical exponents have been reported individually by using a linear and a nonlinear response theories in a toy model. We provide a simple way to compute the critical exponents all at once, which is an analog of the Landau theory. The present… 

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