Population Dynamics in Spatially Heterogeneous Systems with Drift: the generalized contact process

Details Population Dynamics in Spatially Heterogeneous Systems with Drift: the generalized contact process Population Dynamics in Spatially Heterogeneous Systems with Drift: the generalized contact process

2004-12-08

arxiv.org/abs/cond-mat/0412180v2

Physical Review E 72, 036112 (2005)

Physics

Condensed Matter

Statistical Mechanics

8 papes, 12 figures

Scientific paper

10.1103/PhysRevE.72.036112

We investigate the time evolution and stationary states of a stochastic, spatially discrete, population model (contact process) with spatial heterogeneity and imposed drift (wind) in one- and two-dimensions. We consider in particular a situation in which space is divided into two regions: an oasis and a desert (low and high death rates). Carrying out computer simulations we find that the population in the (quasi) stationary state will be zero, localized, or delocalized, depending on the values of the drift and other parameters. The phase diagram is similar to that obtained by Nelson and coworkers from a deterministic, spatially continuous model of a bacterial population undergoing convection in a heterogeneous medium.

Affiliated with

Also associated with

No associations

Rating

Population Dynamics in Spatially Heterogeneous Systems with Drift: the generalized contact process does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Population Dynamics in Spatially Heterogeneous Systems with Drift: the generalized contact process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Population Dynamics in Spatially Heterogeneous Systems with Drift: the generalized contact process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-169460