Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Overflow of a dipolar exciton trap at high magnetic fields   We study laterally trapped dipolar exciton ensembles in coupled GaAs quantum
wells at high magnetic fields in the Faraday configuration. In
photoluminescence experiments, we identify three magnetic field regimes. At low
fields, the exciton density is increased by a reduced charge carrier escape
from the trap, and additionally, the excitons' emission energy is corrected by
a positive diamagnetic shift. At intermediate fields, magnetic field dependent
correction terms apply which follow the characteristics of a neutral
magnetoexciton. Due to a combined effect of an increasing binding energy and
lifetime, the exciton density is roughly doubled from zero to about seven
Tesla. At the latter high field value, the charge carriers occupy only the
lowest Landau level. In this situation, the exciton trap can overflow
independently from the electrostatic depth of the trapping potential, and the
energy shift of the excitons caused by the so-called quantum confined Stark
effect is effectively compensated. Instead, the exciton energetics seem to be
driven by the magnetic field dependent renormalization of the many-body
interaction terms. In this regime, the impact of parasitic in-plane fields at
the edge of trapping potential is eliminated.

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The categories of this paper are: math-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: supr-con