Nonuniversality and critical point shift in systems with infinitely many absorbing configurations

Details Nonuniversality and critical point shift in systems with infinitely many absorbing configurations Nonuniversality and critical point shift in systems with infinitely many absorbing configurations

1999-09-23

arxiv.org/abs/cond-mat/9909347v1

Physics

Condensed Matter

Statistical Mechanics

22 pages + 16 figures

Scientific paper

A detailed study of critical spreading in the one-dimensional pair contact process is performed using a recently devised reweighting method. The results confirm the validity of a generalized hyperscaling relation among the (nonuniversal) spreading exponents, and support the assertion that the critical point location does not depend on the particle density \phi. It appears that the exponents z and delta+eta, once thought to be invariant, exhibit a systematic dependence on \phi.

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