Asymmetric exclusion processes with site sharing in a one-channel transport system

作者：Liu Mingzhe; Hawick Ken^*; Marsland Stephen

来源：Physics Letters A, 2010, 374(4): 516-521.

DOI：10.1016/j.physleta.2009.11.055

• TASEP
• Mean-field approach
• Monte Carlo simulations
• Sharing mechanism

This Letter investigates two-species totally asymmetric simple exclusion process (TASEP) with site sharing in a one-channel transport system. In the model, different species of particles may share the same sites, while particles of the same species may not (hard-core exclusion). The site-sharing mechanism is applied to the bulk as well as the boundaries. Such sharing mechanism within the framework of the TASEP has been largely ignored so far. The steady-state phase diagrams, currents and bulk densities are obtained using a mean-field approximation and computer simulations. The presence of three stationary phases (low-density, high-density, and maximal Current) are identified. A comparison on the stationary Current with the Bridge model [M.R. Evans, et al., Phys. Rev. Lett. 74 (1995) 208] has shown that our model can enhance the Current. The theoretical calculations are well supported by Monte Carlo simulations.

• 出版日期2010-1-11