Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collective modes of two-dimensional classical Coulomb fluids   Molecular dynamics simulations have been performed to investigate in detail
collective modes spectra of two-dimensional Coulomb fluids in a wide range of
coupling. The obtained dispersion relations are compared with theoretical
approaches based on quasi-crystalline approximation (QCA), also known as the
quasi-localized charge approximation (QLCA) in the plasma-related context. An
overall satisfactory agreement between theory and simulations is documented for
the longitudinal mode at moderate coupling and in the long-wavelength domain at
strong coupling. For the transverse mode, satisfactory agreement in the
long-wavelength domain is only reached at very strong coupling, when the cutoff
wave-number below which shear waves cannot propagate becomes small. The
dependence of the cutoff wave-number for shear waves on the coupling parameter
is obtained.

12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas