Zeitschrift für Physik B Condensed Matter

, Volume 62, Issue 2, pp 261–266 | Cite as

Influence of multiplicative noise on properties of first order dynamical phase transition

  • M. V. Feigel'man
  • I. E. Staroselsky


Critical phenomena in distributed dynamical two-dimensional nonlinear system near the point of the Turing instability are discussed. The system is considered in the presence of thermal fluctuations and multiplicative noise (MN) representing fluctuations of the bifurcation parameter. Since such a noise of the control parameter can have macroscopic (not thermal) nature, the intensity is considered as sufficiently large in comparison with the amplitude of thermal fluctuations, and it is shown that in the system the first order phase transition occurs with the characteristics which are independent on the thermal noise. Hence the discontinuous transtion could be observable in experimental situations where this would not be possible in the absence of MN (like the Rayleigh-Benard problem). When the correlation length of MN is small, the transition results in the formation of a complex state possessing only short-range order, and when MN is spatially uniform, a quasi-one-dimensional structure will be formed.


Neural Network Phase Transition Nonlinear System Nonlinear Dynamics Control Parameter 
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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • M. V. Feigel'man
    • 1
  • I. E. Staroselsky
    • 1
  1. 1.L.D. Landau Institute for Theoretical PhysicsUSSR Academy of SciencesMoscowUSSR

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