Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Screening of hydrodynamic interactions for polyelectrolytes in salt
  solution   We provide numerical evidence that hydrodynamic interactions are screened for
charged polymers in salt solution on time scales below the Zimm time. At very
short times, a crossover to hydrodynamic behavior is observed. Our conclusions
are drawn from extensive coarse-grained computer simulations of
polyelectrolytes in explicit solvent and explicit salt, and discussed in terms
of analytical arguments based on the Debye-Hueckel approximation.

33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol