Bidirectional Totally Asymmetric Simple Exclusion Process with a Bottleneck and Different Hopping Rates


This Letter investigates the bidirectional totally asymmetric simple exclusion process (TASEP) with a bottleneck and different hopping rates. The phase diagrams are provided by theoretical analysis and the currents of theoretical predication are checked by computer simulations. When the hopping rate of lane 2 (p2) is fixed and the hopping rate of lane 1 (p1) reduces, the areas of high density (HD) phase for fast lane increases and that for slow lane reduces. The length of bottleneck is large enough, the currents of theoretical calculation and simulation agree well. Importantly, the current of maximum current (MC) phase is systematically underestimated theoretical results for short bottleneck because the transients dominate the behavior of the system.

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In this paper, Song Xiao and Xiaoyu Chen contributed equally to this work. Authors acknowledge the support of Item sponsored by National Natural Science Foundation (Grant no. 51568032).

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Correspondence to Song Xiao or Yanna Liu.

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Song Xiao, Chen, X. & Liu, Y. Bidirectional Totally Asymmetric Simple Exclusion Process with a Bottleneck and Different Hopping Rates. Russ. J. Phys. Chem. B 14, 929–933 (2020).

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  • bidirectional
  • bottleneck
  • different hopping rates