Relativistic entanglement in single-particle quantum states using Non-Linear entanglement witnesses

TL;DR

This paper investigates how Lorentz transformations affect the entanglement of single-particle relativistic quantum states, showing that such transformations reduce both the amount and the region of entanglement using Non-Linear entanglement witnesses.

Contribution

It introduces a method to analyze relativistic entanglement in single-particle states using NLEWs, highlighting the impact of Lorentz transformations.

Findings

Lorentz transformations decrease entanglement in relativistic states.

NLEWs effectively detect entanglement changes under Lorentz boosts.

Entanglement region shrinks due to relativistic effects.

Abstract

In this study, the spin-momentum correlation of one massive spin-1/2 and spin-1 particle states, which are made based on projection of a relativistic spin operator into timelike direction is investigated. It is shown that by using Non-Linear entanglement witnesses (NLEWs), the effect of Lorentz transformation would decrease both the amount and the region of entanglement.