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Open AccessArticle

Revisiting Entanglement within the Bohmian Approach to Quantum Mechanics

1
Physics Department, University of Pretoria, Pretoria 0002, South Africa
2
CeBio y Secretaria de Investigaciones, Universidad Nacional del Noroeste de la Prov. de Buenos Aires-UNNOBA y CONICET, Roque Saenz Peña 456,6000 Junín, Argentina
*
Author to whom correspondence should be addressed.
Entropy 2018, 20(6), 473; https://doi.org/10.3390/e20060473
Received: 24 April 2018 / Revised: 2 June 2018 / Accepted: 12 June 2018 / Published: 18 June 2018
(This article belongs to the Special Issue Quantum Foundations: 90 Years of Uncertainty)
We revisit the concept of entanglement within the Bohmian approach to quantum mechanics. Inspired by Bohmian dynamics, we introduce two partial measures for the amount of entanglement corresponding to a pure state of a pair of quantum particles. One of these measures is associated with the statistical correlations exhibited by the joint probability density of the two Bohmian particles in configuration space. The other partial measure corresponds to the correlations associated with the phase of the joint wave function, and describes the non-separability of the Bohmian velocity field. The sum of these two components is equal to the total entanglement of the joint quantum state, as measured by the linear entropy of the single-particle reduced density matrix. View Full-Text
Keywords: Bohmian dynamics; entanglement indicators; linear entropy Bohmian dynamics; entanglement indicators; linear entropy
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Zander, C.; Plastino, A.R. Revisiting Entanglement within the Bohmian Approach to Quantum Mechanics. Entropy 2018, 20, 473.

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