Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Functional determinants and Casimir energy in higher dimensional
  spherically symmetric background potentials   In this paper we analyze the spectral zeta function associated with a Laplace
operator acting on scalar functions on an N-dimensional Euclidean space in the
presence of a spherically symmetric background potential. The obtained analytic
continuation of the spectral zeta function is then used to derive very simple
results for the functional determinant of the operator and the Casimir energy
of the scalar field.

35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph