2012/08/09 by David A. Sher, Sher, David A. · 1 citation
Computer Science · Mathematics · #Advanced Mathematical Modeling in Engineering #Nonlinear Partial Differential Equations #Spectral Theory in Mathematical Physics #math.AP #math.SP #msc:58J05 #msc:58J35 #msc:58J50 #msc:58J52
paper · pdf · doi:10.48550/arxiv.1208.1809
41 pages, 7 figures. Version 2: bug fixed in Theorem 2 statement, other minor changes
arxiv created 2013/10/01 · arxiv updated 2013/10/02
We investigate the behavior of various spectral invariants, particularly the determinant of the Laplacian, on a family of smooth Riemannian manifolds which undergo conic degeneration; that is, which converge in a particular way to a manifold with a conical singularity. Our main result is an asymptotic formula for the determinant up to terms which vanish as the degeneration parameter goes to zero. The proof proceeds in two parts; we study the fine structure of the heat trace on the degenerating manifolds via a parametrix construction, and then use that fine structure to analyze the zeta function and determinant of the Laplacian.