2026-06-27T10:23:12Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/514882023-08-26T15:15:23Zcom_20.500.14352_14col_20.500.14352_15

Rivas, Ángel Luis Aina, Alfredo 2023-06-20T10:56:34Z 2023-06-20T10:56:34Z 2008-02-12 1050-2947 10.1103/PhysRevA.77.022105 https://hdl.handle.net/20.500.14352/51488 http://dx.doi.org/10.1103/PhysRevA.77.022105 http://journals.aps.org/ We elaborate an approach to quantum fluctuations of angular momentum based on the diagonalization of the covariance matrix in two versions: real symmetric and complex Hermitian. At difference with previous approaches this is SU(2) invariant and avoids any difficulty caused by nontrivial commutators. Meaningful uncertainty relations are derived which are nontrivial even for vanishing mean angular momentum. We apply this approach to some relevant states. eng open access Characterization of quantum angular-momentum fluctuations via principal components journal article