Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modeling Elastic and Plastic Deformations in Non-Equilibrium Processing
  Using Phase Field Crystals   A continuum field theory approach is presented for modeling elastic and
plastic deformation, free surfaces and multiple crystal orientations in
non-equilibrium processing phenomena. Many basic properties of the model are
calculated analytically and numerical simulations are presented for a number of
important applications including, epitaxial growth, material hardness, grain
growth, reconstructive phase transitions and crack propagation.

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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: q-bio
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The categories of this paper are: math
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org