Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-dimensional Superdiffusive Heat Propagation Induced by Optical
  Phonon-Phonon Interactions   It is known that one-dimensional anomalous heat propagation is usually
characterized by a L\'{e}vy walk superdiffusive spreading function with two
side peaks located on the fronts due to the finite velocity of acoustic
phonons, and in the case when the acoustic phonons vanish, e.g., due to the
phonon-lattice interactions such that the system's momentum is not conserved,
the side peaks will disappear and a normal Gaussian diffusive heat propagating
behavior will be observed. Here we show that there exists another type of
superdiffusive, non-Gaussian heat propagation but without side peaks in a
typical nonacoustic, momentum-nonconserving system. It implies that thermal
transport in this system disobeys the Fourier law, in clear contrast with the
existing theoretical predictions. The underlying mechanism is related to a
novel effect of optical phonon-phonon interactions. These findings may open a
new avenue for further exploring thermal transport in low dimensions.

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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
3
The categories of this paper are: physics
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The categories of this paper are: eess
7
The categories of this paper are: hep-th
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The categories of this paper are: econ
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
2
The categories of this paper are: math