Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical screening effects of substrate phonons on two-dimensional
  excitons   Atomically thin materials are exceedingly susceptible to their dielectric
environment. For transition metal dichalcogenides, sample placement on a
substrate or encapsulation in hexagonal boron nitride (hBN) are frequently
used. In this paper we show that the dielectric response due to optical phonons
of adjacent materials influences excitons in 2d crystals. We provide an
analytic model for the coupling of 2d charge carriers to optical substrate
phonons, which causes polaron effects similar to that of intrinsic 2d phonons.
We apply the model to hBN-encapsulated WSe2, finding a significant reduction of
the exciton binding energies due to dynamical screening effects.

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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: nlin