Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge ordering and inter-layer coupling in cuprates   We analyze the superconducting state and c-axis charge dynamics of cuprates
at optimal doping using a charge ordered bilayer superlattice model in which
pairing is supported by inter-layer Coulomb energy gain (potential energy
driven superconductivity).The 2D pair-condensate can be characterized by a
charge ordered state with a "checkerboard" like pattern seen by scanning
tunneling microscopy.The pair condensation might lead to the sharp decrease of
the normal state c-axis anisotropy of the hole content and hence to the
decrease of inter-layer dielectric screening.The decrease of the c-axis
dielectric screening can be the primary source of the condensation energy below
$T_c$. We find that a net gain in the electrostatic energy occurs along the
c-axis, which is proportional to the measured condensation energy ($U_0$) and
with $T_c$:$E_c^{3D} \approx 2 (\xi_{ab}/a_0+1)^2 U_0 \approx k_B T_c$ and is
due to inter-layer charge complementarity (charge asymmetry of the boson
condensate) where $\xi_{ab}$ is the coherence length of the condensate and $a_0
\approx 3.9 \AA$ is the in-planelattice constant.

5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph