On the determinant of the Laplacian Delta_k on a non-compact surface

10.02.2017, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Giovanni De Gaetano (Humboldt Universität zu Berlin)

The determinant of the Laplacian Delta_k on k-differentials,
or on automorphic forms of weight k, on a compact Riemann surface played
an important role in the mathematical physics literature in the late '80s.
It turns out that the same object in the non-compact setting has an
arithmetic significance, but its natural definition is not convergent. In
this talk, after a review of the classical theory, we examine two
alternative definitions and related convergence results; the crucial point
to be examined is the behavior of the associated heat kernel at the missing

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