Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superradiant and Lasing States in Driven-Dissipative Dicke Models   We present the non-equilibrium phase diagram of a model which can demonstrate
both Dicke--Hepp--Lieb superradiance and regular lasing by varying the coherent
and incoherent driving terms. We find that the regions in the phase diagram
corresponding to superradiance and standard lasing are always separated by a
normal region. We analyse the behaviour of the system using a combination of
exact numerics based on permutation symmetry of the density matrix for small to
intermediate numbers of molecules, and second order cumulant equations for
large numbers of molecules. We find that the nature of the photon distribution
in the superradiant and lasing states are very similar, but the emission
spectrum is very different. We also show that in the presence of both coherent
and incoherent driving, a period-doubling route to a chaotic state occurs.

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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: math