Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Avoidance of Collapse by Circular Current-Carrying Cosmic String Loops   Earlier attempts to calculate the nonlinear dynamical evolution of Witten
type superconducting vacuum vortex defects relied on the use of approximate
conducting string models that were too simple to take proper account of the
effect of current saturation. This effect is however allowed for adequately in
a newly developed class of rather more complicated, though still conveniently
analytic, conducting string models. These more realistic models have recently
been employed by Larsen and Axenides for investigating the collapse of circular
string loops in the case for which angular momentum is absent. The present work
extends this investigation to the generic case of circular string loops for
which angular momentum is present, so that there will be a centrifugal
potential barrier. This barrier will prevent collapse unless the initial
conditions are such that the relevant current saturation limit is attained, in
which case the string description of the vortex defect will break down, so that
its subsequent fate is hard to foresee. On the other hand if saturation is
avoided one would expect that the loop will eventually radiate away its excess
energy and settle down into a vorton type equilibrium state.

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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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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: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas