Cluster Expansion and Resurgence in the Polyakov Model.
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DOI: 10.1103/physrevlett.128.151601
Abstract: In the Polyakov model, a nonperturbative mass gap is formed at leading-order semiclassics by instanton effects. By using the notions of critical points at infinity, cluster expansion, and Lefschetz thimbles, we show that a third-order… read more here.
Keywords: polyakov model; expansion resurgence; cluster expansion; polyakov ... See more keywords