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Integrability of the multi-species ASEP with long-range jumps on $\mathbb{Z}$

Probability 2024-08-01 v1 Mathematical Physics math.MP

Abstract

Let us consider a two-sided multi-species stochastic particle model with finitely many particles on Z\mathbb{Z} defined as follows. Suppose that each particle is labelled by a positive integer ll and waits a random time exponentially distributed with rate 11. It then chooses the right direction to jump with probability pp or the left direction with probability q=1pq=1-p. If the particle chooses the right direction, it jumps to the nearest site occupied by a particle l<ll'<l (with the convention that an empty site is considered as a particle with labelled 00). If the particle chooses the left direction, it follows the rule of the multi-species totally asymmetric simple exclusion process (mTASEP). We show that this model is integrable and provide the exact formula of the transition probability using the Bethe ansatz.

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Cite

@article{arxiv.2407.21608,
  title  = {Integrability of the multi-species ASEP with long-range jumps on $\mathbb{Z}$},
  author = {Eunghyun Lee},
  journal= {arXiv preprint arXiv:2407.21608},
  year   = {2024}
}

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25 pages