Hydrodynamics for the partial exclusion process in random environment

Journal Article (2021)
Author(s)

S. Floreani (TU Delft - Applied Probability)

F. Redig (TU Delft - Applied Probability)

Federico Sau (Institute of Science and Technology (IST Austria))

Research Group
Applied Probability
Copyright
© 2021 S. Floreani, F.H.J. Redig, Federico Sau
DOI related publication
https://doi.org/10.1016/j.spa.2021.08.006
More Info
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Publication Year
2021
Language
English
Copyright
© 2021 S. Floreani, F.H.J. Redig, Federico Sau
Research Group
Applied Probability
Volume number
142
Pages (from-to)
124-158
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Abstract

In this paper, we introduce a random environment for the exclusion process in Zd obtained by assigning a maximal occupancy to each site. This maximal occupancy is allowed to randomly vary among sites, and partial exclusion occurs. Under the assumption of ergodicity under translation and uniform ellipticity of the environment, we derive a quenched hydrodynamic limit in path space by strengthening the mild solution approach initiated in Nagy (2002) and Faggionato (2007). To this purpose, we prove, employing the technology developed for the random conductance model, a homogenization result in the form of an arbitrary starting point quenched invariance principle for a single particle in the same environment, which is a result of independent interest. The self-duality property of the partial exclusion process allows us to transfer this homogenization result to the particle system and, then, apply the tightness criterion in Redig et al. (2020).