Quantum Mechanics and Leggett’s Inequalities

We show that when the proper description of the behaviour of individual photons or spin \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}${{1}\over{2}}$\end{document} particles in a spherically symmetric entangled pair is done through the use of the density matrix, the Leggett’s inequality is not violated by quantum mechanics.