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Irreversible phase transitions driven by an oscillatory parameter in a far-from-equilibrium system | | G P Saracco
; E V Albano
; | | Date: |
28 Feb 2001 | | Journal: | Phys Rev E, 63 (3 Pt 2), 036119 | | Abstract: | The dynamic response of a forest-fire model to the harmonic variation of an external parameter is studied by means of numerical simulations. Second-order irreversible phase transitions driven by the harmonic input are reported. The location of such transitions depends on both the amplitude and period of the input signal. By means of epidemic studies the relevant critical exponents can be determined, which allow us to place the reported transitions in the universality class of directed percolation. This conclusion is also supported by a field theoretical calculation. | | Source: | PubMed, pmid11308721 | | Services: | Forum | Review | Favorites | |
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