Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zigzag spin-S chain near ferromagnet-antiferromagnet transition point   The properties of the ferromagnetic frustrated spin-S one-dimensional
Heisenberg model in the vicinity of the transition point from the ferromagnetic
to the singlet ground state is studied using the perturbation theory (PT) in
small parameter characterizing the deviation from the transition point. The
critical exponents defining the behavior of the ground state energy and spin
correlation functions are determined using scaling estimates of infrared
divergencies of the PT. It is shown that the quantum fluctuations for $s=1/2$
are sufficiently strong to change the classical critical exponents, while for
spin systems with $s\geq 1$ the critical exponents remain classical. The
dimerization in the singlet phase near the transition point is discussed.

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The categories of this paper are: math
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
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The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: eess