Issue |
Europhys. Lett.
Volume 37, Number 8, March II 1997
|
|
---|---|---|
Page(s) | 559 - 564 | |
Section | Condensed matter: structure, thermal and mechanical properties | |
DOI | https://doi.org/10.1209/epl/i1997-00191-8 | |
Published online | 01 September 2002 |
Novel quenched disorder fixed point in a two-temperature lattice gas
Center for Stochastic Processes in Science and Engineering
and Department of Physics Virginia Tech, Blacksburg, VA 24061-0435, USA
Received:
18
December
1996
Accepted:
31
January
1997
We investigate the effects of quenched randomness on the universal properties of a two-temperature lattice gas. The disorder modifies the dynamical transition rates of the system in an anisotropic fashion, giving rise to a new fixed point. We determine the associated scaling form of the structure factor, quoting critical exponents to two-loop order in an expansion around the upper critical dimension . The close relationship with another quenched disorder fixed point, discovered recently in this model, is discussed.
PACS: 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems / 05.70.Fh – Phase transitions: general aspects / 82.20.Mj – Nonequilibrium kinetics
© EDP Sciences, 1997
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