Asymptotics in ASEP with Step Initial Condition

Details Asymptotics in ASEP with Step Initial Condition Asymptotics in ASEP with Step Initial Condition

2008-07-10

arxiv.org/abs/0807.1713v2

Commun. Math. Phys. 290 (2009), 129--154

Mathematics

Probability

29 pages. Version 2 has a new title and adds asymptotics in a third regime

Scientific paper

10.1007/s00220-009-0761-0

In previous work the authors considered the asymmetric simple exclusion process on the integer lattice in the case of step initial condition, particles beginning at the positive integers. There it was shown that the probability distribution for the position of an individual particle is given by an integral whose integrand involves a Fredholm determinant. Here we use this formula to obtain three asymptotic results for the positions of these particles. In one an apparently new distribution function arises and in another the distribuion function F_2 arises. The latter extends a result of Johansson on TASEP to ASEP.

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