Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonequilibrium Steady State of Photoexcited Correlated Electrons in the
  Presence of Dissipation   We present a framework to determine nonequilibrium steady states in strongly
correlated electron systems in the presence of dissipation. This is
demonstrated for a correlated electron (Falicov-Kimball) model attached to a
heat bath and irradiated by an intense pump light, for which an exact solution
is obtained with the Floquet method combined with the nonequilibrium dynamical
mean-field theory. On top of a Drude-like peak indicative of photometallization
as observed in recent pump-probe experiments, new nonequilibrium phenomena are
predicted to emerge, where the optical conductivity exhibits dip and kink
structures around the frequency of the pump light, a midgap absorption arising
from photoinduced Floquet subbands, and a negative attenuation (gain) due to a
population inversion.

2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph