Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zero-energy quasiparticles in an interacting nanowire containing a
  topological Josephson junction   We study a Josephson junction in a Kitaev chain with particle-hole symmetric
nearest neighbor interactions. When the phase difference across the junction is
$\pi$, we show analytically that the full spectrum is fourfold degenerate up to
corrections that vanish exponentially in the system size. The Majorana bound
states at the ends of the chain are known to survive interactions. Our result
proves that the same is true for the zero-energy quasiparticle localized at the
junction. We further study finite size corrections numerically, and show how
repulsive interactions lead to stronger end-to-end correlations than in a
noninteracting system with the same bulk gap.

29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph