Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Randomly Charged Polymers: An Exact Enumeration Study   We perform an exact enumeration study of polymers formed from a (quenched)
random sequence of charged monomers $\pm q_0$. Such polymers, known as
polyampholytes, are compact when completely neutral and expanded when highly
charged. Our exhaustive search included all spatial conformations and quenched
sequences for up to 12--step (13--site) walks. We investigate the behavior of
the polymer as a function of its overall excess charge $Q$, and temperature
$T$. At low temperatures there is a phase transition from compact to extended
configurations when the charge exceeds $Q_c\approx q_0 \sqrt{N}$. There are
also indications of a transition for small $Q$ between two compact states on
varying temperature. Numerical estimates are provided for the condensation
energy, surface tension, and the critical exponent $\nu$.

31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
19
The categories of this paper are: eess
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
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph