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On the TASEP with second class particles. (English) Zbl 1382.60097

Summary: In this paper we study some conditional probabilities for the totally asymmetric simple exclusion processes (TASEP) with second class particles. To be more specific, we consider a finite system with one first class particle and \(N-1\) second class particles, and we assume that the first class particle is initially at the leftmost position. In this case, we find the probability that the first class particle is at \(x\) and it is still the leftmost particle at time \(t\). In particular, we show that this probability is expressed by the determinant of an \(N\times N\) matrix of contour integrals if the initial positions of particles satisfy the step initial condition. The resulting formula is very similar to a known formula in the (usual) TASEP with the step initial condition which was used for asymptotics by T. Nagao and T. Sasamoto [Nucl. Phys., B 699, No. 3, 487–502 (2004; Zbl 1123.82345)].

MSC:

60J25 Continuous-time Markov processes on general state spaces
60K35 Interacting random processes; statistical mechanics type models; percolation theory
82B23 Exactly solvable models; Bethe ansatz

Citations:

Zbl 1123.82345

References:

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