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20232026
most citedNotes on peculiarities of Schwinger--DeWitt technique: one-loop double poles, total-derivative terms and determinant anomalies

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hep-th2026

Multiple Mellin-Barnes integrals in Schwinger-DeWitt technique

A. O. Barvinsky, A. E. Kalugin, W. Wachowski

We consider off-diagonal asymptotic series for integral kernels of functions of Laplace-type operators on curved backgrounds. These expansions are obtained by applying integral tra…