Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ground State Phase Diagrams of Frustrated Spin-S XXZ Chains: Chiral
  Ordered Phases   The ground-state phase diagram of the frustrated spin-S XXZ chain with the
competing nearest- and next-nearest-neighbor antiferromagnetic couplings is
studied numerically by using the density-matrix renormalization-group method
for the cases of S = 1/2, 3/2, and 2. We are paricularly interested in the
possible gapless and gapped chiral phases, in which the chirality \kappa_l =
S_l^x S_{l+1}^y - S_l^y S_{l+1}^x exhibits a finite long-range order whereas
the spin correlation decays either algebraically or exponentially. We show that
the gapless chiral phase appears in a broad region of the phase diagram for
general S. By contrast, the gapped chiral phase is found for integer S in a
narrow region of the phase diagram, while it has not been identified for
half-odd integer S within our numerical accuracy. By combining the results with
our previous result for S = 1, we discuss the S-dependence of the phase
diagram. The prediction from a bosonization analysis on the decay exponent of
the spin correlation is verified.

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The categories of this paper are: nlin
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: bayes-an