Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extremely imbalanced two-dimensional electron-hole-photon systems   We investigate the phases of two-dimensional electron-hole systems strongly
coupled to a microcavity photon field in the limit of extreme charge imbalance.
Using variational wave functions, we examine the competition between different
electron-hole paired states for the specific cases of semiconducting III-V
single quantum wells, electron-hole bilayers, and transition metal
dichalcogenide monolayers embedded in a planar microcavity. We show how the
Fermi sea of excess charges modifies both the electron-hole bound state
(exciton) properties and the dielectric constant of the cavity active medium,
which in turn affects the photon component of the many-body polariton ground
state. On the one hand, long-range Coulomb interactions and Pauli blocking of
the Fermi sea promote electron-hole pairing with finite center-of-mass
momentum, corresponding to an excitonic roton minimum. On the other hand, the
strong coupling to the ultra-low-mass cavity photon mode favors zero-momentum
pairs. We discuss the prospect of observing different types of electron-hole
pairing in the photon spectrum.

16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga