Browsing by Author "Hu, Mao-Bin"

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    Bulk induced phase transition in driven diffusive systems
    (Nature Publishing Group, 2014) Wang, Yu-Qing; Jiang, Rui; Kolomeisky, Anatoly B.; Hu, Mao-Bin
    This paper studies a weakly and asymmetrically coupled three-lane driven diffusive system. A non-monotonically changing density profile in the middle lane has been observed. When the extreme value of the density profile reaches ρ = 0.5, a bulk induced phase transition occurs which exhibits a shock and a continuously and smoothly decreasing density profile which crosses ρ = 0.5 upstream or downstream of the shock. The existence of double shocks has also been observed. A mean-field approach has been used to interpret the numerical results obtained by Monte Carlo simulations. The current minimization principle has excluded the occurrence of two or more bulk induced shocks in the general case of nonzero lane changing rates.
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    Phase diagram structures in a periodic one-dimensional exclusion process
    (American Physical Society, 2013) Jiang, Rui; Wang, Yu-Qing; Kolomeisky, Anatoly B.; Huang, Wei; Hu, Mao-Bin; Wu, Qing-Song
    This paper studies a periodic one-dimensional exclusion process composed of a driven part and a biased diffusive part in a mesoscopic limit. It is shown that, depending on the biased diffusion parameter δ, rich phase diagram structures appear in which diverse phases have been exhibited and the density profile in the diffusive part is qualitatively different. This is because the domain wall is behaving differently. Our analytical results are in good agreement with Monte Carlo simulations.