Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of Polymer Decompression: Expansion, Unfolding and Ejection   The dynamics of polymer decompression, i.e., a process from compressed,
compact state to the relaxed swoll en conformation, can be formally described
as a {\it nonlinear diffusion}. We discuss here two basic examples: (i) the
expansion, or unfolding from a compact state, and (ii) the ejection of pressed
polymer through a pore. The problem can be solved exactly for the case (i), but
not for the latter. Even in such situations, a scheme called {\it uniform
approximation} is shown to be useful to get a physical insight involved. Its
application to the case (ii) is able to account for conflicting numerical data
in a consistent way.

12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th