Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin polarization-scaling quantum maps and channels   We introduce a spin polarization-scaling map for spin-$j$ particles, whose
physical meaning is the decrease of spin polarization along three mutually
orthogonal axes. We find conditions on three scaling parameters under which the
map is positive, completely positive, entanglement breaking, 2-tensor-stable
positive, and 2-locally entanglement annihilating. The results are specified
for maps on spin-$1$ particles. The difference from the case of
spin-$\frac{1}{2}$ particles is emphasized.

26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci