Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The incommensurate charge-density-wave instability in the extended
  three-band Hubbard model   The infinite-U three-band Hubbard model is considered in order to describe
the CuO_2 planes of the high temperature superconducting cuprates. The charge
instabilities are investigated when the model is extended with a
nearest-neighbor repulsion between holes on copper d and oxygen p orbitals and
in the presence of a long-range Coulombic repulsion. It is found that a
first-order valence instability line ending with a critical point is present
like in the previously investigated model without long-range forces. However,
the dominant critical instability is the formation of incommensurate
charge-density-waves, which always occur before the valence-instability
critical point is reached. An effective singular attraction arises in the
proximity of the charge-density wave instability, accounting for both a strong
pairing mechanism and for the anomalous normal state properties.

34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph