2014/01/31 by Chiu Man Ho, Stephen D. H. Hsu · 2 citations
Physics and Astronomy · #Locality #Noncommutative and Quantum Gravity Theories #Nonlinear system #Quantum #Quantum Mechanics and Applications #Quantum and Classical Electrodynamics #Quantum dynamics #Quantum entanglement #Quantum field theory #Quantum nonlocality #Wave function collapse #gr-qc #hep-th #quant-ph
paper · pdf · doi:10.1142/s0217751x15500293
published in International Journal of Modern Physics A 30(04n05), 1550029 (World Scientific) · 12 pages, 1 figure, v2: version to appear in IJMPA
arxiv created 2015/01/09 · openalex publication_date 2015/02/11 · arxiv updated 2015/06/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Nonlinear modifications of quantum mechanics generically lead to nonlocal effects which violate relativistic causality. We study these effects using the functional Schrödinger equation for quantum fields and identify a type of nonlocality which causes nearly instantaneous entanglement of spacelike separated systems. We describe a simple example involving widely separated wave packet (coherent) states, showing that nonlinearity in the Schrödinger evolution causes spacelike entanglement, even in free field theory.