Entangled vacuum state for accelerated observers

TL;DR

This paper introduces a new entangled vacuum state model for accelerated observers, showing that the entanglement remains unaffected by the assumption of correlations between modes with opposite momenta in causally disconnected regions.

Contribution

It proposes a novel entangled vacuum state for accelerated frames and demonstrates its invariance of entanglement despite assumptions of mode correlations.

Findings

Entanglement does not decrease with acceleration under the new model.

The proposed vacuum state maintains entanglement despite assumptions of mode correlations.

The model suggests entanglement robustness in non-inertial frames.

Abstract

Entanglement of Dirac fields has been studied and it is known to decrease with increasing acceleration when a quantum state is shared between users in non-inertial frames. A new form of an entangled vacuum state observed by the accelerated observer is postulated in which it is assumed that entanglement is present between the modes of the quantum field with sharp and opposite momenta defined in two causally disconnected regions of space-time. We find that this assumption does not affect the entanglement of the system.