Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiplicative anomaly and finite charge density   When dealing with zeta-function regularized functional determinants of matrix
valued differential operators, an additional term, overlooked until now and due
to the multiplicative anomaly, may arise. The presence and physical relevance
of this term is discussed in the case of a charged bosonic field at finite
charge density and other possible applications are mentioned.

5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph