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- W2950951886 abstract "With respect to a class of long-range exclusion processes on $mathbb{Z}^d$, with single particle transition rates of order $|cdot|^{-(d+alpha)}$, starting under Bernoulli invariant measure $nu_rho$ with density $rho$, we consider the fluctuation behavior of occupation times at a vertex and more general additive functionals. Part of our motivation is to investigate the dependence on $alpha$, $d$ and $rho$ with respect to the variance of these functionals and associated scaling limits. In the case the rates are symmetric, among other results, we find the scaling limits exhaust a range of fractional Brownian motions with Hurst parameter $Hin [1/2,3/4]$. However, in the asymmetric case, we study the asymptotics of the variances, which when $d=1$ and $rho=1/2$ points to a curious dichotomy between long-range strength parameters $0 3/2$. In the former case, the order of the occupation time variance is the same as under the process with symmetrized transition rates, which are calculated exactly. In the latter situation, we provide consistent lower and upper bounds and other motivations that this variance order is the same as under the asymmetric short-range model, which is connected to KPZ class scalings of the space-time bulk mass density fluctuations." @default.
- W2950951886 created "2019-06-27" @default.
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- W2950951886 date "2014-07-29" @default.
- W2950951886 modified "2023-10-18" @default.
- W2950951886 title "Occupation times of long-range exclusion and connections to KPZ class exponents" @default.
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- W2950951886 hasPublicationYear "2014" @default.
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