Journal of Statistical Physics

, Volume 142, Issue 4, pp 754–791 | Cite as

Generalized Green Functions and Current Correlations in the TASEP

  • A. M. Povolotsky
  • V. B. Priezzhev
  • G. M. Schütz
Article

Abstract

We study correlation functions of the totally asymmetric simple exclusion process (TASEP) in discrete time with backward sequential update. We prove a determinantal formula for the generalized Green function which describes transitions between positions of particles at different individual time moments. In particular, the generalized Green function defines a probability measure at staircase lines on the space-time plane. The marginals of this measure are the TASEP correlation functions in the space-time region not covered by the standard Green function approach. As an example, we calculate the current correlation function that is the joint probability distribution of times taken by selected particles to travel given distance. An asymptotic analysis shows that current fluctuations converge to the Airy2 process.

Keywords

Totally Asymmetric Simple Exclusion Process Bethe Ansatz Determinantal Point Processes Kardar-Parisi-Zhang universality class 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • A. M. Povolotsky
    • 1
  • V. B. Priezzhev
    • 1
  • G. M. Schütz
    • 2
    • 3
  1. 1.Bogolubov Laboratory of Theoretical PhysicsJoint Institute for Nuclear ResearchDubnaRussia
  2. 2.Forschungszentrum Jülich GmbHInstitut für FestkörperforschungJülichGermany
  3. 3.Interdisziplinäres Zentrum für Komplexe SystemeUniversität BonnBonnGermany

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