Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectral filtering in quantum Y-junction   We examine scattering properties of singular vertex of degree $n=2$ and
$n=3$, taking advantage of a new form of representing the vertex boundary
condition, which has been devised to approximate a singular vertex with finite
potentials. We show that proper identification of $\delta$ and $\delta'$
components in the connection condition between outgoing lines enables the
designing of quantum spectral branch-filters.

34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc