Gravity-induced entanglement under constrained dynamics
The paper explores gravity-induced entanglement using a mechanically constrained pendulum setup with nitrogen-vacancy centers in diamonds attached to carbon nanotubes. While free-fall methods face severe experimental limits, this constrained model allows for precise calibration and long integration times. It shows that short-time inertial dynamics reproduce gravitational phase accumulation, and the constraint introduces a small, manageable correction to the entanglement phase.