Naslov
Remarks on Entanglement and Identical Particles

Autori
Benatti, F. ; Floreanini, R. ; Franchini, Fabio ; Marzolino, Ugo

Izvornik
Open systems & information dynamics (1230-1612) 24 (2017), 3; 1740004, 13

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
entanglement ; identical particles

Sažetak
We argue that in the case of identical particles the most natural identification of separability, that is of absence of non- classical correlations, is via the factorization of mean values of commuting observables. It thus follows that separability and entanglement depend both on the state and on the choice of observables and are not absolute notions. We compare this point of view with a recent novel approach to the entanglement of identical particles, which allows for the definition of an entanglement entropy from a suitably defined reduced particle density matrix, without the need of labelling the system constituents. We contrast this figure of merit with the aforementioned lack of an absolute notion of entanglement by considering few paradigmatic examples.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA