Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Preheating with Fractional Powers   We consider preheating in models in which the potential for the inflaton is
given by a fractional power, as is the case in axion monodromy inflation. We
assume a standard coupling between the inflaton field and a scalar matter
field. We find that in spite of the fact that the oscillation of the inflaton
about the field value which minimizes the potential is anharmonic, there is
nevertheless a parametric resonance instability, and we determine the Floquet
exponent which describes this instability as a function of the parameters of
the inflaton potential.

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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex
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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: nucl-th