Renyi entropy for monodromy defects of higher derivative free fields on even-dimensional spheres

Explicit polynomial forms for Rényi and entanglement entropies are given on even --dimensional spheres which possess a codimension--2 U(1) monodromy defect. Free scalar and Dirac fields are treated and higher-derivative propagation operators employed. The central charge, $C_T$, is also calculated. Comparison with existing results is made and it is shown how these can be obtained from the values here.

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