Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mesoscopic Speckle   We have measured the local and global statistics of singularity velocity, v,
and have related these through the spatial correlation function of v. The
distribution of v is a mixture of a mesoscopic distribution of global change in
the speckle pattern and the distribution for v for Gaussian random fields. When
v is normalized by the standard deviation of the fractional intensity change,
probability distributions and correlation function of v approach those for
random Gaussian fields. These results are directly analogous to the statistics
of transmitted intensity normalized by the total transmission and provide a
unified framework for understanding statistics of speckle evolution and
intensity.

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The categories of this paper are: q-bio
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: physics
30
The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
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The categories of this paper are: stat