Multispecies inhomogeneous t-PushTASEP from antisymmetric fusion

2025/03/02 by Ayyer, Arvind, Kuniba, Atsuo · 2 citations
#17B37 #60J27 #81R50 #82B20 #82B23 #82B44 #Combinatorics (math.CO) #FOS: Mathematics #FOS: Physical sciences #Mathematical Physics (math-ph) #Probability (math.PR) #Quantum Algebra (math.QA)

paper · doi:10.48550/arxiv.2503.00829

Abstract

We investigate the recently introduced inhomogeneous n-species t-PushTASEP, a long-range stochastic process on a periodic lattice. A Baxter-type formula is established, expressing the Markov matrix as an alternating sum of commuting transfer matrices over all the fundamental representations of U_t(\widehatsl_n+1). This superposition acts as an inclusion-exclusion principle, selectively extracting the sequential particle transitions characteristic of the PushTASEP, while canceling forbidden channels. The homogeneous specialization connects the PushTASEP to ASEP, showing that the two models share eigenstates and a common integrability structure.

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