Multispecies TASEP and combinatorial R
Abstract
We identify the algorithm for constructing steady states of the n-species totally asymmetric simple exclusion process (TASEP) on L site periodic chain by Ferrari and Martin with a composition of combinatorial R for the quantum affine algebra Uq(slL) in crystal base theory. Based on this connection and the factorized form of the R matrix derived recently from the tetrahedron equation, we establish a new matrix product formula for the steady state of the TASEP which is expressed in terms of corner transfer matrices of the q-oscillator valued five-vertex model at q=0.
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