Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hidden Pseudogap and Excitation Spectra in a Strongly Coupled Two-Band
  Superfluid/Superconductor   We investigate single-particle excitation properties in the normal state of a
two-band superconductor or superfluid throughout the Bardeen-Cooper-Schrieffer
(BCS) to Bose-Einstein-condensation (BEC) crossover, within the many-body
T-matrix approximation for multi-channel pairing fluctuations. We address the
single-particle density of states and the spectral functions consisting of two
contributions associated with a waekly interacting deep band and a strongly
interacting shallow band, relevant for iron-based multiband superconductors and
multicomponent fermionic superfluids. We show how the pseudogap state in the
shallow band is hidden by the deep band contribution throughout the two-band
BCS-BEC crossover. Our results could explain the missing pseudogap in recent
scanning tunneling microscopy experiments in FeSe superconductors.

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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: cs
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The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th