Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetization jump in one dimensional $J-Q_{2}$ model with anisotropic
  exchange   We investigate the adiabatic magnetization process of the one-dimensional
$J-Q_{2}$ model with XXZ anisotropy $g$ in an external magnetic field $h$ by
using density matrix renormalization group (DMRG) method. According to the
characteristic of the magnetization curves, we draw a magnetization phase
diagram consisting of four phases. For a fixed nonzero pair coupling $Q$, i)
when $g<-1$, the ground state is always ferromagnetic in spite of $h$; ii) when
$g>-1$ but still small, the whole magnetization curve is continuous and smooth;
iii) if further increasing $g$, there is a macroscopic magnetization jump from
partially- to fully-polarized state; iv) for a sufficiently large $g$, the
magnetization jump is from non- to fully-polarized state. By examining the
energy per magnon and the correlation function, we find that the origin of the
magnetization jump is the condensation of magnons and the formation of magnetic
domains. We also demonstrate that while the experienced states are
Heisenberg-like without long-range order, all the \textit{jumped-over} states
have antiferromagnetic or N\'eel long-range orders, or their mixing.

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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess