Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The resistance of quantum entanglement to temperature in the
  Kugel--Khomskii model   The Kugel--Khomskii model with entangled spin and orbital degrees of freedom
is a good testing ground for many important features in quantum information
processing, such as robust gaps in the entanglement spectra. Here, we
demonstrate that the entanglement can be also robust under effect of
temperature within a wide range of parameters. It is shown, in particular, that
the temperature dependence of entanglement often exhibits a nonmonotonic
behavior. Namely, there turn out to be ranges of the model parameters, where
entanglement is absent at zero temperature, but then, with an increase in
temperature, it appears, passes through a maximum, and again vanishes.

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The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom