Damage Spreading During Domain Growth

Details Damage Spreading During Domain Growth Damage Spreading During Domain Growth

1994-04-07

arxiv.org/abs/cond-mat/9404016v1

Phys. Rev. E 49, R4763-4766 (1994)

Physics

Condensed Matter

4 pags of revtex3 + 3 postscript files appended as a compressed and uuencoded file. UIB9403200

Scientific paper

10.1103/PhysRevE.49.R4763

We study damage spreading in models of two-dimensional systems undergoing first order phase transitions. We consider several models from the same non-conserved order parameter universality class, and find unexpected differences between them. An exact solution of the Ohta-Jasnow-Kawasaki model yields the damage growth law $D \sim t^{\phi}$, where $\phi = t^{d/4}$ in $d$ dimensions. In contrast, time-dependent Ginzburg-Landau simulations and Ising simulations in $d= 2$ using heat-bath dynamics show power-law growth, but with an exponent of approximately $0.36$, independent of the system sizes studied. In marked contrast, Metropolis dynamics shows damage growing via $\phi \sim 1$, although the damage difference grows as $t^{0.4}$. PACS: 64.60.-i, 05.50.+q

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