Foundations of Physics

, Volume 41, Issue 4, pp 705–733

Quantum Locality


DOI: 10.1007/s10701-010-9512-5

Cite this article as:
Griffiths, R.B. Found Phys (2011) 41: 705. doi:10.1007/s10701-010-9512-5


It is argued that while quantum mechanics contains nonlocal or entangled states, the instantaneous or nonlocal influences sometimes thought to be present due to violations of Bell inequalities in fact arise from mistaken attempts to apply classical concepts and introduce probabilities in a manner inconsistent with the Hilbert space structure of standard quantum mechanics. Instead, Einstein locality is a valid quantum principle: objective properties of individual quantum systems do not change when something is done to another noninteracting system. There is no reason to suspect any conflict between quantum theory and special relativity.


LocalityQuantum theoryNonlocal influenceEinsteinBell inequality

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of PhysicsCarnegie-Mellon UniversityPittsburghUSA