Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interference and interaction effects in multi-level quantum dots   Using renormalization group techniques, we study spectral and transport
properties of a spinless interacting quantum dot consisting of two levels
coupled to metallic reservoirs. For strong Coulomb repulsion $U$ and an applied
Aharonov-Bohm phase $\phi$, we find a large direct tunnel splitting
$|\Delta|\sim (\Gamma/\pi)|\cos(\phi/2)|\ln(U/\omega_c)$ between the levels of
the order of the level broadening $\Gamma$. As a consequence we discover a
many-body resonance in the spectral density that can be measured via the
absorption power. Furthermore, for $\phi=\pi$, we show that the system can be
tuned into an effective Anderson model with spin-dependent tunneling.

17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics