Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Suppressing and restoring the Dicke superradiance transition by
  dephasing and decay   We show that dephasing of individual atoms destroys the superradiance
transition of the Dicke model, but that adding individual decay toward the spin
down state can restore this transition. To demonstrate this, we present a
method to give an exact solution for the $N$ atom problem with individual
dephasing which scales polynomially with $N$. By comparing finite size scaling
of our exact solution to a cumulant expansion, we confirm the destruction and
restoration of the superradiance transition holds in the thermodynamic limit.

37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg