Given a unitary representation U of an Abelian group G and a subgroup H , we characterize the positive operator valued measures based on the quotient group G / H and covariant with respect to U. Some physical examples are considered. Among them, phase and phase-difference observables are particularly important

Positive operator valued measures covariant with respect to an abelian group

CASSINELLI, GIOVANNI;DE VITO, ERNESTO;TOIGO, ALESSANDRO
2004-01-01

Abstract

Given a unitary representation U of an Abelian group G and a subgroup H , we characterize the positive operator valued measures based on the quotient group G / H and covariant with respect to U. Some physical examples are considered. Among them, phase and phase-difference observables are particularly important
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/247599
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact