Entanglement of Accelerating Particles

TL;DR

This paper investigates how uniform acceleration affects entanglement between particles, revealing that entanglement can transfer to antiparticles in fermions but not in scalars, with implications for quantum information in relativistic settings.

Contribution

It demonstrates the differential behavior of entanglement transfer in accelerating fermions versus scalars, highlighting the role of particle type in relativistic quantum entanglement.

Findings

Entanglement remains unchanged when all degrees of freedom are considered.

Fermionic entanglement transfers to antiparticles at high acceleration.

Scalar particles show no entanglement transfer to antiparticles.

Abstract

We study how the entanglement of a maximally entangled pair of particles is affected when one or both of the pair are uniformly accelerated, while the detector remains in an inertial frame. We find that the entanglement is unchanged if all degrees of freedom are considered. However, particle pairs are produced, and the entanglements of different bipartite systems may change with the acceleration. In particular, the entanglement between accelerating fermions is transferred preferentially to the produced antiparticles when the acceleration is large, and the entanglement transfer is complete when the acceleration approaches infinity. However, for scalar particles, no entanglement transfer to the antiparticles is observed.