Objective realism and freedom of choice in relativistic quantum field theory

TL;DR

This paper explores whether objective realism and free choice can coexist in relativistic quantum field theory, concluding that it is impossible without violating relativity, thus suggesting the potential for faster-than-light signaling.

Contribution

It demonstrates the incompatibility of objective realism and free choice within relativistic quantum field theory without breaking Lorentz invariance.

Findings

Objective realism and free choice cannot coexist in relativistic quantum field theory without violating relativity.

Faster-than-light signaling becomes a theoretical possibility if relativity is violated.

The study challenges the compatibility of quantum realism with relativistic constraints.

Abstract

Traditional Bell's argument shows that freedom of choice is inconsistent with quantum realism if lack of signaling and sufficiently fast choices and readouts are assumed. While no-signaling alone is a consequence of special relativity, this is not the case of spacetime location of choice and readout. Here we attempt to incorporate freedom of choice into quantum objective realism relying solely on relativistic quantum field theory. We conclude that this is impossible without breaking relativistic invariance and put forward the possibility of signaling faster than light, which cannot be excluded if an ultimate theory violates relativity.