Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bifurcation of Stretched Exponential Relaxation in Microscopically
  Homogeneous Glasses   Measured exponents associated with Stretched Exponential Relaxation (SER) are
widely scattered in microscopically inhomogeneous glasses, but accurately
bifurcate into two "magic" values, 3/5 and 3/7, in a wide variety of
microscopically homogeneous glasses. These bifurcated values are derived here
from a statistical product model that involves diffusion of excitations to
native traps in the presence of short-range forces only, or combined short- and
long- range forces, respectively. Bifurcated SER can be used to monitor sample
homogeneity. It explains a wide range of experimental data, and even includes
multiple aspects of the citation distributions of 20th century science,
involving 25 million papers and 600 million citations, and why these changed
radically in 1960. It also shows that the distribution of country population
sizes has compacted glassy character, and is strongly influenced by migration.

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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
2
The categories of this paper are: math
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex