Rao, Madan ; Chakrabarti, Amitabha (1994) Dynamical scaling functions in conserved vector order-parameter systems without topological defects Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 49 (5). pp. 3727-3730. ISSN 1539-3755
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Official URL: http://pre.aps.org/abstract/PRE/v49/i5/p3727_1
Related URL: http://dx.doi.org/10.1103/PhysRevE.49.3727
Abstract
We study the growth of order following a zero temperature quench in the one-dimensional XY (n=2) and Heisenberg (n=3) models and in the two-dimensional n=4 model with a conserved order parameter using a Langevin formalism. These systems are characterized by an absence of localized topological defects (n>d). Although the structure factor S(k,t) obeys standard dynamical scaling at late times, we show quite convincingly that S(k,t) possesses an exponential tail, violating the generalized Porod's law. We also find that the form of the asymptotic correlation function at small distances exhibits a striking universality.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 67272 |
Deposited On: | 29 Oct 2011 11:50 |
Last Modified: | 29 Oct 2011 11:50 |
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