The center-flavor symmetry of a gauge theory specifies the global form consistent and flavor bundle background field configurations. For 6d theories which arise from tensor branch deformation superconformal (SCFT), we determine structure such configurations, including possible continuous Abelian R-symmetry bundles. Proceeding to conformal fixed point, this provides prescription for reading off ...

Let X be a compact connected Riemann surface of genus at least two. We compute the Chen–Ruan cohomology ring of the moduli space of stable PSL(2, C)– bundles of nontrivial second Stiefel–Whitney class over X .

In this paper we define a Poincaré-Reidemeister scalar product on the determinant line of the cohomology of any flat vector bundle over a closed orientable odd-dimensional manifold. It is a combinatorial “torsion-type” invariant which refines the PR-metric introduced in [Fa] and contains an additional sign or phase information. We compute the PR-scalar product in terms of the torsions of Euler ...