Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low temperature ballistic spin transport in the S=1/2 antiferromagnetic
  Heisenberg chain compound SrCuO2   We report zero and longitudinal magnetic field muon spin relaxation
measurements of the spin S=1/2 antiferromagnetic Heisenberg chain material
SrCuO2. We find that in a weak applied magnetic field B the spin-lattice
relaxation rate follows a power law B^n with n=-0.9(3). This result is
temperature independent for 5K < T < 300 K. Within conformal field theory and
using the M\"uller ansatz we conclude ballistic spin transport in SrCuO2.

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The categories of this paper are: eess
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The categories of this paper are: q-bio
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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: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat