Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Increasing identical particle entanglement by fuzzy measurements   We investigate the effects of fuzzy measurements on spin entanglement for
identical particles, both fermions and bosons. We first consider an ideal
measurement apparatus and define operators that detect the symmetry of the
spatial and spin part of the density matrix as a function of particle distance.
Then, moving on to realistic devices that can only detect the position of the
particle to within a certain spread, it was surprisingly found that the
entanglement between particles increases with the broadening of detection.

25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga