Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Crystallites of Active Chiral Particles   One of the intrinsic characteristics of far-from-equilibrium systems is the
nonrelaxational nature of the system dynamics, which leads to novel properties
that cannot be understood and described by conventional pathways based on
thermodynamic potentials. Of particular interest are the formation and
evolution of ordered patterns composed of active particles that exhibit
collective behavior. Here we examine such a type of nonpotential active system,
focusing on effects of coupling and competition between chiral particle
self-propulsion and self-spinning. It leads to the transition between three
bulk dynamical regimes dominated by collective translative motion,
spinning-induced structural arrest, and dynamical frustration. In addition, a
persistently dynamical state of self-rotating crystallites is identified as a
result of a localized-delocalized transition induced by the crystal-melt
interface. The mechanism for the breaking of localized bulk states can also be
utilized to achieve self-shearing or self-flow of active crystalline layers.

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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
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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: cs
3
The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: ao-sci
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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: solv-int
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The categories of this paper are: q-bio