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Topological freezing is a well known problem in lattice simulations: withshrinking lattice spacing a transition between topological sectors becomesincreasingly improbable, leading to a problematic increase of theautocorrelation time regarding several observables. We present ourinvestigation of metadynamics as a solution for topological freezing in theSchwinger model. Specifically, we take a closer look at the collective variableand its scaling behaviour, visualize the effects of topological freezing andhow metadynamics helps in that respect and explore alternatives for a moreefficient building process. Possible implications for and differences tofour-dimensional SU(3) theory are briefly discussed.

Metadynamics Surfing on Topology Barriers in the Schwinger Model