Einstein-Podolsky-Rosen correlations of vector bosons

TL;DR

This paper investigates EPR correlations of massive vector bosons within quantum field theory, revealing momentum-dependent behaviors and enhanced Bell inequality violations in relativistic cases.

Contribution

It provides the first detailed analysis of EPR correlations for relativistic vector bosons, highlighting their unique momentum-dependent properties and Bell inequality violations.

Findings

Correlation functions depend on particle momenta in relativistic cases

Relativistic spin-1 particles violate Bell inequalities more than nonrelativistic ones

Degree of Bell violation varies with particle momentum

Abstract

We calculate the joint probabilities and the correlation function in Einstein--Podolsky--Rosen type experiments with a massive vector boson in the framework of quantum field theory. We report on the strange behavior of the correlation function (and the probabilities) -- the correlation function, which in the relativistic case still depends on the particle momenta, for some fixed configurations has local extrema. We also show that relativistic spin-1 particles violate some Bell inequalities more than nonrelativistic ones and that the degree of violation of the Bell inequality is momentum dependent.