Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ballistic quench-induced correlation waves in ultracold gases   We investigate the wave packet dynamics of a pair of particles that undergoes
a rapid change of scattering length. The short-range interactions are modeled
in the zero-range limit, where the quench is accomplished by switching the
boundary condition of the wave function at vanishing particle separation. This
generates a correlation wave that propagates rapidly to nonzero particle
separations. We have derived universal, analytic results for this process that
lead to a simple phase-space picture of the quench-induced scattering.
Intuitively, the strength of the correlation wave relates to the initial
contact of the system. We find that, in one spatial dimension, the $k^{-4}$
tail of the momentum distribution contains a ballistic contribution that does
not originate from short-range pair correlations, and a similar conclusion can
hold in other dimensionalities depending on the quench protocol. We examine the
resultant quench-induced transport in an optical lattice in 1D, and a
semiclassical treatment is found to give quantitatively accurate estimates for
the transport probabilities.

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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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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: mtrl-th
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The categories of this paper are: dg-ga
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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: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph