Kavli Affiliate: Masahito Yamazaki | First 5 Authors: Ryuichiro Kitano, Norikazu Yamada, Masahito Yamazaki, , | Summary: We study $theta$ dependence of the vacuum energy for the 4d SU(2) pure Yang-Mills theory by lattice numerical simulations. The response of topological excitations to the smearing procedure is investigated in detail, in order to extract topological information […]