Transition Probabilities and Dynamic Structure Function in the ASEP Conditioned on Strong Flux
Transition Probabilities and Dynamic Structure Function in the ASEP Conditioned on Strong Flux
复制标题
强通量条件下ASEP中的跃迁概率和动态结构函数
DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
G. Schütz
中科院分区:
文献类型:
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作者:
V. Popkov;G. Schütz
We consider the asymmetric simple exclusion processes (ASEP) on a ring constrained to produce an atypically large flux, or an extreme activity. Using quantum free fermion techniques we find the time-dependent conditional transition probabilities and the exact dynamical structure function under such conditioned dynamics. In the thermodynamic limit we obtain the explicit scaling form. This gives a direct proof that the dynamical exponent in the extreme current regime is z=1 rather than the KPZ exponent z=3/2 which characterizes the ASEP in the regime of typical currents. Some of our results extend to the activity in the partially asymmetric simple exclusion process, including the symmetric case.