Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vacuum polarization energy of the Shifman-Voloshin soliton   We compute the vacuum polarization energy of soliton configurations in a
model with two scalar fields in one space dimension using spectral methods. The
second field represents an extension of the conventional $\phi^4$ kink soliton
model. We find that the vacuum polarization energy destabilizes the soliton
except when the fields have identical masses. In that case the model is
equivalent to two independent $\phi^4$ models.

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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: physics
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an