Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quartets and the Current-Phase Structure of a Double Quantum Dot
  Superconducting Bijunction at Equilibrium   The equilibrium current-phase structure of a tri-terminal superconducting
Josephson junction (bijunction) is analyzed as a function of the two relevant
phases. The bijunction is made of two noninteracting quantum dots, each one
carrying a single level. Nonlocal processes coupling the three terminals are
described in terms of quartet tunneling and pair cotunneling. These couplings
are due to nonlocal Andreev and cotunneling processes through the central
superconductor $S_0$, as well as direct interdot coupling. In some cases, two
degenerate midgap Andreev states appear, symmetric with respect to the
($\pi,\pi$) point. The lifting of this degeneracy by interdot couplings induces
a strong non-local inductance at low enough temperatures. This effect is
compared to the mutual inductance of a two-loop circuit.

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The categories of this paper are: math
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat