Power series solution of the inhomogeneous exclusion process Auteur(s): Szavits-Nossan Juraj, Romano M. Carmen, Ciandrini L. (Article) Publié: Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 97 p.052139 (2018) Texte intégral en Openaccess : Ref HAL: hal-01737998_v1 Ref Arxiv: 1803.00887 DOI: 10.1103/PhysRevE.97.052139 WoS: 000433291900005 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 7 Citations Résumé: We develop a power series method for the nonequilibrium steady state of the inhomogeneous one-dimensional totally asymmetric simple exclusion process (TASEP) in contact with two particle reservoirs and with site-dependent hopping rates in the bulk. The power series is performed in the entrance or exit rates governing particle exchange with the reservoirs, and the corresponding particle current is computed analytically up to the cubic term in the entry or exit rate, respectively. We also show how to compute higher-order terms using combinatorial objects known as Young tableaux. Our results address the long outstanding problem of finding the exact nonequilibrium steady state of the inhomogeneous TASEP. The findings are particularly relevant to the modelling of mRNA translation in which the rate of translation initiation, corresponding to the entrance rate in the TASEP, is typically small. |