Journal of Physical Studies 12(1), Article 1002 [9 pages] (2008) DOI: https://doi.org/10.30970/jps.12.1002 PHASE TRANSITIONS IN STOCHASTIC SYSTEMS WITH INTERNAL MULTIPLICATIVE NOISE D. O. Kharchenko1, A. V. Dvornichenko2 1Applied Physics Institute NAS of Ukraine, 58, Petropavlovskaya St., Sumy, UA--40030, Ukraine 2Sumy State University 2, Rymsky--Korsakov St., Sumy, UA--40007, Ukraine

A mechanism of entropy driven phase transitions is considered. Analytically and numerically it is shown that in the case of relaxation flow in a potential with a field-dependednt kinetic coefficient, reentrant phase transitions are realized in stochastic systems with internal fluctuations. It is found that internal multiplicative noise yields topological changes in stationary distribution and shifts positions of bifurcation points.

PACS number(s): 05.40.-a, 05.10.Gg, 64.60.-i

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