2000/10/23 by Stuart Dowker, Peter Gilkey, Klaus Kirsten
Physics and Astronomy · #hep-th
published as Int.J.Math. 12 (2001) 505-518 · 16 pages, LaTeX
arxiv created 2000/10/23 · arxiv updated 2009/11/30
The spectral problem where the field satisfies Dirichlet conditions on one part of the boundary of the relevant domain and Neumann on the remainder is discussed. It is shown that there does not exist a classical asymptotic expansion for short time in terms of fractional powers of t with locally computable coefficients.