Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Charge Susceptibility of the Spinless Falicov-Kimball Model   An exact solution is presented for the frequency-dependent charge
susceptibility of the spinless Falicov-Kimball model by using dynamical
mean-field theory. We develop a nontrivial application of the Baym-Kadanoff
"conserving approximation" formalism to exactly determine the
frequency-dependent vertex function (which turns out to assume a particularly
simple form). We show how the static and dynamic susceptibilities are decoupled
in this model and how the dynamic susceptibility generically does not show any
signal of the low-temperature charge-density-wave phase transition. We also
examine the temperature evolution of the dynamic charge susceptibility for the
special case of half-filling.

31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom