Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absorption, Photoluminescence and Resonant Rayleigh Scattering Probes of
  Condensed Microcavity Polaritons   We investigate and compare different optical probes of a condensed state of
microcavity polaritons in expected experimental conditions of non-resonant
pumping. We show that the energy- and momentum-resolved resonant Rayleigh
signal provide a distinctive probe of condensation as compared to, e.g.,
photoluminescence emission. In particular, the presence of a collective sound
mode both above and below the chemical potential can be observed, as well as
features directly related to the density of states of particle-hole like
excitations. Both resonant Rayleigh response and the absorption and
photoluminescence, are affected by the presence of quantum well disorder, which
introduces a distribution of oscillator strengths between quantum well excitons
at a given energy and cavity photons at a given momentum. As we show, this
distribution makes it important that in the condensed regime, scattering by
disorder is taken into account to all orders. We show that, in the low density
linear limit, this approach correctly describes inhomogeneous broadening of
polaritons. In addition, in this limit, we extract a linear blue-shift of the
lower polariton versus density, with a coefficient determined by temperature
and by a characteristic disorder length.

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The categories of this paper are: cs
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The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
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The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
18
The categories of this paper are: econ
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph