Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Randomness Effect on the Temperature Dependence of the Finite Field
  Magnetization of a One-Dimensional Spin Gapped System   We investigate the temperature dependence of the finite-field magnetization
of the S=1/2 bond-alternating XY model in the Random magnetic field along the
z-direction having the Lorentzian distribution. The random-averaged free energy
can be exactly calculated, which enables us to obtain the thermodynamical
quantities. The temperature dependence of the finite-field magnetization shows
various behaviors depending on the parameters $\delta$ and $\Gamma$, where
$\delta$ and $\Gamma$ are the bond-alternation parameter and the Lorentzian
distribution parameter, respectively.

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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: cs
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The categories of this paper are: chem-ph