Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous negative differential thermal resistance in a
  momentum-conserving lattice   A two-segment Fermi-Pasta-Ulam lattices has been investigated by using
nonequilibrium molecular dynamics. Here we present an anomalous negative
differential thermal resistance (NDTR) that have not been reported in
Frenkel-Kontorova and \phi_4 lattices up to the present. The NDTR disappears at
low temperature region. The region of NDTR shifts from the large to the small
temperature difference region as the system size increases. Anomalous
dependence of NDTR on the temperature can be explained as the negative effect
induced by the nonlinear coupling. The explanation can also cover the
phenomenon of NDTR in momentum-nonconserved lattices.

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The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph