Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Modified Random Phase Approximation of Polyelectrolyte Solutions   We compute the phase diagram of salt-free polyelectrolyte solutions using a
modified Debye-Huckel Approach. We introduce the chain connectivity via the
Random Phase Approximation with two important modifications. We modify the
electrostatic potential at short distances to include a bound on the
electrostatic attractions at the distance of closest approach between charges.
This modification is shown to act as a hard core in the phase diagram of
electrolyte solutions. We also introduce a cut-off on the integration of the
modes of wave length smaller than the size over which the chains are strongly
perturbed by the electrostatic interactions. This cut-off is shown to be
essential to predict physical phase diagram in long chain solutions.

21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con