Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Emergent low-energy bound states in the two-orbital Hubbard model   A repulsive Coulomb interaction between electrons in different orbitals in
correlated materials can give rise to bound quasiparticle states. We study the
non-hybridized two-orbital Hubbard model with intra (inter)-orbital interaction
$U$ ($U_{12}$) and different band widths using an improved dynamical mean field
theory numerical technique which leads to reliable spectra on the real energy
axis directly at zero temperature. We find that a finite density of states at
the Fermi energy in one band is correlated with the emergence of well defined
quasiparticle states at excited energies $\Delta=U-U_{12}$ in the other band.
These excitations are inter-band holon-doublon bound states. At the symmetric
point $U=U_{12}$, the quasiparticle peaks are located at the Fermi energy,
leading to a simultaneous and continuous Mott transition settling a
long-standing controversy.

8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph