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Gauge theories in the presence of codimension two vortex defects are known tobe related to the theories on orbifolds. By using this relation we study thelocalized path integrals of 2D N=(2,2) SUSY gauge theories with point-likevortex defects. We present a formula for the correlation functions of vortexdefects inserted at the north and the south poles of squashed spheres. ForAbelian gauge theories the correlators are locally constant as functions of theparameters of the defect, but exhibit discontinuity at some threshold valuesdetermined by the deficit angle at the poles and the R-charges of the mattermultiplets. For non-Abelian gauge groups the correlators depend non-triviallyon the types of gauge symmetry breaking due to the defects.

Orbifolds, Defects and Sphere Partition Function