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Damage Spreading in a Driven Lattice Gas Model | | M. Leticia Rubio Puzzo
; Gustavo P. Saracco
; Ezequiel V. Albano
; | | Date: |
29 Aug 2012 | | Abstract: | We studied damage spreading in a Driven Lattice Gas (DLG) model as a function
of the temperature $T$, the magnitude of the external driving field $E$, and
the lattice size. The DLG model undergoes an order-disorder second-order phase
transition at the critical temperature $T_c(E)$, such that the ordered phase is
characterized by high-density strips running along the direction of the applied
field; while in the disordered phase one has a lattice-gas-like behaviour. It
is found that the damage always spreads for all the investigated temperatures
and reaches a saturation value $D_{sat}$ that depends only on $T$. $D_{sat}$
increases for $T<T_c(E=infty)$, decreases for $T>T_c(E=infty)$ and is free of
finite-size effects. This behaviour can be explained as due to the existence of
interfaces between the high-density strips and the lattice-gas-like phase whose
roughness depends on $T$. Also, we investigated damage spreading for a range of
finite fields as a function of $T$, finding a behaviour similar to that of the
case with $E=infty$. | | Source: | arXiv, 1208.6272 | | Services: | Forum | Review | PDF | Favorites | |
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