Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Writhing Geometry of Stiff Polymers and Scattered Light   The geometry of a smooth line is characterized locally by its curvature and
torsion, or globally by its writhe. In many situations of physical interest the
line is, however, not smooth so that the classical Frenet description of the
geometry breaks down everywhere. One example is a thermalized stiff polymer
such as DNA, where the shape of the molecule is the integral of a Brownian
process. In such systems a natural frame is defined by parallel transport. In
order to calculate the writhe of such non-smooth lines we study the area
distributions of random walks on a sphere. A novel transposition of these
results occurs in multiple light scattering where the writhe of the light path
gives rise to a Berry phase recently observed in scattering experiments in
colloidal suspensions .

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The categories of this paper are: physics
0
The categories of this paper are: hep-ph
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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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: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: econ
11
The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph