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Multi-time distribution in discrete polynuclear growth

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arxiv 1906.01053 v3 pith:SGAPBZSN submitted 2019-06-03 math.PR cond-mat.stat-mechmath-phmath.MP

classification math.PRcond-mat.stat-mechmath-phmath.MP
keywords distributionmulti-timediscreteformulagrowthpolynuclearappropriateasymptotic
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We study the multi-time distribution in a discrete polynuclear growth model or, equivalently, in directed last-passage percolation with geometric weights. A formula for the joint multi-time distribution function is derived in the discrete setting. It takes the form of a multiple contour integral of a block Fredholm determinant. The asymptotic multi-time distribution is then computed by taking the appropriate KPZ-scaling limit of this formula. This distribution is expected to be universal for models in the Kardar-Parisi-Zhang universality class.

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Cited by 2 Pith papers

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  1. Two-time spatial decorrelation for the flat KPZ fixed point

    math.PR 2026-07 conditional novelty 6.0 of 10

    The two-time spatial covariance of the flat KPZ fixed point decays as exp(-c|x|^3), and normalized spatial averages converge to a Gaussian process with covariance equal to the space-integrated two-time correlation.

  2. Riemann surfaces for KPZ with periodic boundaries

    cond-mat.stat-mech 2019-08 conditional novelty 6.0 of 10

    Known exact finite-volume KPZ fluctuation probabilities are expressed as traces on Riemann surfaces for half-integer polylogarithms, and prior formulas by Prolhac and by Baik and Liu are proved equivalent.

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