Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical phenomena and nonlinear dynamics in a spin ensemble strongly
  coupled to a cavity. II. Semiclassical-to-quantum boundary   We numerically study the dynamics and stationary states of a spin ensemble
strongly coupled to a single-mode resonator subjected to loss and external
driving. Employing a generalized cumulant expansion approach we analyze
finite-size corrections to a semiclassical description of amplitude
bistability, which is a paradigm example of a driven-dissipative phase
transition. Our theoretical model allows us to include inhomogeneous broadening
of the spin ensemble and to capture in which way the quantum corrections
approach the semiclassical limit for increasing ensemble size $N$. We set up a
criterion for the validity of the Maxwell-Bloch equations and show that close
to the critical point of amplitude bistability even very large spin ensembles
consisting of up to $10^4$ spins feature significant deviations from the
semiclassical theory.

17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math