Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distinguishing phases using the dynamical response of driven-dissipative
  light-matter systems   We present a peculiar transition triggered by infinitesimal dissipation in
the interpolating Dicke-Tavis-Cummings model. The model describes a ubiquitous
light-matter setting using a collection of two-level systems interacting with
quantum light trapped in an optical cavity. In a previous work [Phys. Rev.
Lett. 120, 183603 (2018)], dissipation was shown to extend a normal phase (dark
state) into new regions of the model's parameter space. Harnessing Keldysh's
action formalism to compute the response function of the light, we show that
the normal phase does not merely spread but encompasses a transition between
the old and the dissipation-stabilized regimes of the normal phase. This
transition, however, solely manifests in the dynamical fluctuations atop the
empty cavity, through stabilization of an excited state of the closed system.
Consequently, we reveal that the fluctuations flip from being particlelike to
holelike across this transition. This inversion is also accompanied by the
behavior of the Liouvillian eigenvalues akin to exceptional points. Our work
forges the way to discovering transitions in a wide variety of
driven-dissipative systems and is highly pertinent for current experiments.

25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex