Spin-outcome correlations and memory-assisted entropic uncertainty in Bhabha scattering with an entangled spectator
The study investigates how initial entanglement between a scattered positron B and a spectator electron C affects uncertainty in measuring spin outcomes of an incident electron A during Bhabha scattering. It found that this initial entanglement can lower total uncertainty near high-energy backscattering by strengthening correlations with the spectator C, revealing distinct roles for the interacting particle and the spectator as quantum memories.