Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multipartite concurrence for identical-fermion systems   We study the problem of detecting multipartite entanglement among
indistinguishable fermionic particles. A multipartite concurrence for pure
states of $N$ identical fermions, each one having a $d$-dimensional
single-particle Hilbert space, is introduced. Such entanglement measure, in
particular, is optimized for maximally entangled states of three identical
fermions that play a role analogous to the usual (qubit)
Greenberger-Horne-Zeilinger state. In addition, it is shown that the fermionic
multipartite concurrence can be expressed as the mean value of an observable,
provided two copies of the composite state are available.

23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph