Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Green's function technique for a two-electrode mesoscopic system under
  bias   We present a Green's function technique for studying the nonlinear
conductance of a nanocontact system with two electrodes at different chemical
potentials. The retarded Green's function for a single-impurity Anderson model
with two reservoirs is obtained in terms of a $5\times 5$ matrix in which the
effect of bias is contained. A complete set of basis vectors for the
single-impurity Anderson model has been provided before formulating the Green's
function. Finally, we present a self-consistent method to fix the undetermined
quantities existing in the matrix elements for the retarded Green's function.

37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
19
The categories of this paper are: eess
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin