Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass spectrum and elastic scattering in the massive SU(2)_f Schwinger
  model on the lattice   We calculate numerically scattering phases for elastic meson-meson scattering
processes in the strongly coupled massive Schwinger-model with an SU(2) flavour
symmetry. These calculations are based on Luescher's method in which finite
size effects in two-particle energies are exploited. The results from
Monte-Carlo simulations with staggered fermions for the lightest meson ("pion")
are in good agreement with the analytical strong-coupling prediction.
Furthermore, the mass spectrum of low-lying mesonic states is investigated
numerically. We find a surprisingly rich spectrum in the mass region [m_\pi,4
m_\pi].

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The categories of this paper are: eess
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The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
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The categories of this paper are: mtrl-th
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The categories of this paper are: math
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph