Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Results for Capacitances and Forces in cylindrical systems   In this paper we report on some new results concerning the behavior of forces
between two equal circular electrodes with finite thickness. We show that for
close electrodes different scenarios can result, depending on the thickness and
on the ratio of charges on the conductors. Attractive or repulsive forces can
appear depending on the parameters and on the separation of the electrodes. We
give a unified description of cylindrical systems using an high precision
method based on a Galerkin expansion and we check our results with a quite
sophisticated boundary element method (BEM). We perform a preliminary study of
a single cylinder (both full and hollow) to check the method and to improve
several existing results and compute some relevant parameters as the quadrupole
moment and the polarizability.

15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex