Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gaussian Schell Source as Model for Slit-Collimated Atomic and Molecular
  Beams   We derive the spatial coherence and intensity profiles of beams emerging from
two consecutive collimating apertures, and compare our results with data. We
show how to make a Gaussian Schell-model (GSM) beam by assuming Gaussian
apertures. Then we compare the intensity profile, the transverse coherence
width and the divergence angle of a GSM beam with those same properties of a
beam that is collimated with two hard-edged slits. The GSM beam formulae are
simpler, and offer an intuitive way to understand how partially coherent beams
interact with interferometers.

31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th