Research PapersNo Access

QUANTUM MEASUREMENT SCHEMES RELATED TO FLAVOR-WEIGHTED ENERGIES

A. E. BERNARDINI

Departamento de Física, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos, SP, Brazil

https://doi.org/10.1142/S0217751X13500656Cited by:1 (Source: Crossref)

Abstract

The framework of the generalized theory of quantum measurement provides some theoretical tools for computing flavor associated energies correlated to the von-Neumann entropy of a composed system. After defining flavor-averaged and flavor-weighted energies, that are respectively supported by nonselective (selective) quantum measurement schemes, the right correlation between the energies of flavor eigenstates and their measurement probabilities can be obtained. Our results from the composed quantum system framework show that the nonselective measurement scheme for computing flavor-weighted energies is consistent with predictions from single-particle quantum mechanics. As an application of our results, through the expressions for neutrino effective mass values, it is straightforwardly verified that cosmological background neutrino energy densities could be obtained from the coherent superposition of mass eigenstates.

Keywords:

PACS: 14.60.Pq, 03.65.Ta, 03.65.Yz

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