Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-equilibrium gap-collapse near a first-order Mott transition   We study the non-equilibrium dynamics of a simple model for V2O3 that
consists of a quarter-filled Hubbard model for two orbitals that are split by a
weak crystal field. Peculiarities of this model are: (1) a Mott insulator whose
gap corresponds to transferring an electron from the occupied lower orbital to
the empty upper one, rather than from the lower to the upper Hubbard sub-bands;
(2) a Mott transition generically of first order even at zero temperature. We
simulate by means of time-dependent Gutzwiller approximation the evolution
within the insulating phase of an initial state endowed by a non-equilibrium
population of electrons in the upper orbital and holes in the lower one. We
find that the excess population may lead, above a threshold, to a gap-collapse
and drive the insulator into the metastable metallic phase within the
coexistence region around the Mott transition. This result foresees a
non-thermal pathway to revert a Mott insulator into a metal. Even though this
physical scenario is uncovered in a very specific toy-model, we argue it might
apply to other Mott insulating materials that share similar features.

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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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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: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio