Abstract
We consider the dynamics of a class of spin systems with unbounded spins interacting with local mean-field interactions. We prove convergence of the empirical measure to the solution of a McKean–Vlasov equation in the hydrodynamic limit and propagation of chaos. This extends earlier results of Gärtner, Comets and others for bounded spins or strict mean-field interactions.
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Notes
Arguments developed in Sect. 2 require smoothness and certain growth properties of \(\psi ^\prime \) at infinity and could be readily extended to a larger class of local potentials.
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A.B. is partially supported through the German Research Foundation in the Collaborative Research Center 1060 “The Mathematics of Emergent Effects”, the Hausdorff Center for Mathematics (HCM), and the Cluster of Excellence “ImmunoSensation” at Bonn University.
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Bovier, A., Ioffe, D. & Müller, P. The Hydrodynamic Limit for Local Mean-Field Dynamics with Unbounded Spins. J Stat Phys 172, 434–457 (2018). https://doi.org/10.1007/s10955-018-2069-y
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DOI: https://doi.org/10.1007/s10955-018-2069-y