Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting Gap Nodal Surface and Fermi Surface: their partial
  overlap in cuprates   Electron correlation in cuprates leads to a global constraint $\sum_{\bf k}
\Delta_{\bf k} = 0$ on the gap function $\Delta_{\bf k}$ resulting in a gap
nodal surface. We give physical arguments supported by numerical results and
discuss some experimental results to argue that correlations also lead to a
local constraint on charge fluctuations in ${\bf k}$-space close to the Fermi
surface, which may result in a substantial overlap of the Fermi surface with
the gap nodal surface.

17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
18
The categories of this paper are: econ