Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Role of spatial coherence in Goos-H\"anchen and
  Imbert-Fedorov shifts" [arXiv:0804.1895]   It is shown that the spatial Goos-H\"anchen shift is greatly affected by
spatial coherence. A typical example is given.

34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci