First- and second-order phase transitions in a driven lattice gas with nearest-neighbor exclusion

Дата и время публикации : 2000-09-21T20:12:38Z

Авторы публикации и институты :
Ronald Dickman

Ссылка на журнал-издание: Phys. Rev. E 64, 016124-1
Коментарии к cтатье: 8 pages, 5 figures; results due to bad random number generator corrected; significantly revised conclusions
Первичная категория: cond-mat.stat-mech

Все категории : cond-mat.stat-mech

Краткий обзор статьи: A lattice gas with infinite repulsion between particles separated by $leq 1$ lattice spacing, and nearest-neighbor hopping dynamics, is subject to a drive favoring movement along one axis of the square lattice. The equilibrium (zero drive) transition to a phase with sublattice ordering, known to be continuous, shifts to lower density, and becomes discontinuous for large bias. In the ordered nonequilibrium steady state, both the particle and order-parameter densities are nonuniform, with a large fraction of the particles occupying a jammed strip oriented along the drive. The relaxation exhibits features reminiscent of models of granular and glassy materials.

Category: Physics