Does Quantum Nonlocality Exist? Bell’s Theorem and the Many-Worlds Interpretation

Quantum nonlocality may be an artifact of the assumption that observers obey the laws of classical mechanics, while observed systems obey quantum mechanics. I show that, at least in the case of Bell’s Theorem, locality is restored if observed and observer are both assumed to obey quantum mechanics, as in the Many-Worlds Interpretation. Using the MWI, I shall show that the apparently “non-local” expectation value for the product of the spins of two widely separated particles — the “quantum” part of Bell’s Theorem — is really due to a series of three purely local measurements. Thus, experiments confirming “nonlocality” are actually confirming the MWI. PACS numbers: 03.67.Hk, 42.50.-p, 03.65.Bz, 89.70.+c 1 e-mail address: [email protected]