Entangled Simultaneity: Testing Lorentz and Light Speed Invariance with Quantum and Classical Entanglement

• Published in: International journal of theoretical physics Vol. 64; no. 3; p. 78
• Main Authors: Spavieri, Gianfranco, Carrasquero, Ramón, Contreras, Antonio, Durán, Kevin, Flores, Andrés, Mendoza, Juan Carlos
• Format: Journal Article
• Language: English
• Published: New York Springer US 13.03.2025; Springer Nature B.V
• Subjects: Charged particles; Clocks; Clocks & watches; Coordinate transformations; Elementary Particles; Expected values; Global positioning systems; GPS; Invariance; Light; Light speed; Mathematical and Computational Physics; Particle spin; Physics; Physics and Astronomy; Quantum entanglement; Quantum Field Theory; Quantum Physics; Synchronism; Theoretical; Theory of relativity; Clock synchronization; 03.30.+p; 42.25.Bs; Quantum entanglement; Foundations of relativity theory; 45.50.-j; One-way speed of light; Lorentz invariance; Relative simultaneity
• ISSN: 1572-9575; 0020-7748; 1572-9575
• DOI: 10.1007/s10773-025-05932-8

In a rigid rod of length AB = L , rotating uniformly, any two spatially separated points along the rod are connected in a way that shows analogies with the quantum entanglement of the spin of particles. This "classical entanglement" can be used for syncing two distant clocks, one at A and the other at B. Since it differs from Einstein synchronization, this procedure can be adopted for testing the one-way light speed and Lorentz invariance. Applications to optical Sagnac effects confirm that a consistent interpretation requires the adoption of absolute versus relative simultaneity.