Jamming transition in counter flow of slender particles on square lattice

We study the counter flow of slender particles on square lattice under a periodic boundary where each particle consists of 1×n1×n sites. Two types of particles going to the right and to the left are taken into account. The characteristics of counter flow are clarified numerically. The jamming transition occurs at a critical density. We study the dependence of jamming transition on the particle size n. It is shown that the critical density increases with size n of slender particles. The counter flow of slender particles is compared with that of normal particles consisting of one site. The counter flow under an open boundary is also investigated and compared with that of the periodic boundary.