August 2021 The TAZRP speed process
Gideon Amir, Ofer Busani, Patrícia Gonçalves, James B. Martin
Author Affiliations +
Ann. Inst. H. Poincaré Probab. Statist. 57(3): 1281-1305 (August 2021). DOI: 10.1214/20-AIHP1117

Abstract

In (Ann. Probab. 39 (4) (2011) 1205–1242) Amir, Angel and Valkó studied a multi-type version of the totally asymmetric simple exclusion process (TASEP) and introduced the TASEP speed process, which allowed them to answer delicate questions about the joint distribution of the speed of several second-class particles in the TASEP rarefaction fan. In this paper we introduce the analogue of the TASEP speed process for the totally asymmetric zero-range process (TAZRP), and use it to obtain new results on the joint distribution of the speed of several second-class particles in the TAZRP with a reservoir. These is a close link from the speed process to questions about stationary distributions of multi-type versions of the TAZRP; for example we are able to give a precise description of the contents of a single site in equilibrium for a multi-type TAZRP with continuous labels.

Dans (Ann. Probab. 39 (4) (2011) 1205–1242) Amir, Angel et Valkó ont étudié une version multi-type de processus d’exclusion simple totalement asymétrique (TASEP), et introduit le processus de vitesse du TASEP, ce qui leur avait permis de résoudre des questions délicates sur la loi jointe de la vitesse de plusieurs particules de seconde classes dans l’éventail de raréfaction du TASEP. Dans cet article, nous introduisons l’analogue du processus de vitesse du TASEP pour le processus de portée zéro totalement asymétrique (TAZRP), et nous l’utilisons pour obtenir de nouveaux résultats sur la loi jointe de la vitesse de plusieurs particules de seconde classe dans le TAZRP avec un réservoir. Il existe un lien étroit entre le processus de vitesse et la loi stationnaire de versions multi-types du TAZRP ; par exemple, nous sommes en mesure de donner une description précise du contenu d’un site donné à l’équilibre pour un TAZRP multi-type avec étiquettes continues.

Funding Statement

G. Amir was supported by the Israel Science Foundation through grant 575/16 and by the German Israeli Foundation through grant I-1363-304.6/2016. O. Busani was supported by EPSRC’s EP/R021449/1 Standard Grant. P. Gonçalves thanks FCT/Portugal for support through the project UID/MAT/04459/2013. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 715734).

Acknowledgments

We are grateful to two anonymous referees for their detailed and insightful comments.

Citation

Download Citation

Gideon Amir. Ofer Busani. Patrícia Gonçalves. James B. Martin. "The TAZRP speed process." Ann. Inst. H. Poincaré Probab. Statist. 57 (3) 1281 - 1305, August 2021. https://doi.org/10.1214/20-AIHP1117

Information

Received: 25 November 2019; Revised: 15 July 2020; Accepted: 22 October 2020; Published: August 2021
First available in Project Euclid: 22 July 2021

MathSciNet: MR4291447
zbMATH: 1480.60283
Digital Object Identifier: 10.1214/20-AIHP1117

Subjects:
Primary: 60K35 , 82C22

Keywords: Speed of a second class particle , Speed process , Zero range process

Rights: Copyright © 2021 Association des Publications de l’Institut Henri Poincaré

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Vol.57 • No. 3 • August 2021
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