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In lattice quantum field theories with topological sectors, simulations atfine lattice spacings --- with typical algorithms --- tend to freezetopologically. In such cases, specific topological finite size effects have tobe taken into account to obtain physical results, which correspond to infinitevolume or unfixed topology. Moreover, when a theory like QCD is simulated in amoderate volume, one also has to overcome ordinary finite volume effects (notrelated to topology freezing). To extract physical results from simulationsaffected by both types of finite volume effects, we extend a known relationbetween hadron masses at fixed and unfixed topology by additionallyincorporating ordinary finite volume effects. We present numerical results forSU(2) Yang-Mills theory.

Combining ordinary and topological finite volume effects for fixed topology simulations