Quantum radiation produced by the entanglement of quantum fields

TL;DR

This paper explores how an accelerating quantum detector emits radiation due to vacuum entanglement, confirming prior findings and emphasizing the role of nonlocal correlations in quantum field theory.

Contribution

It demonstrates that quantum radiation from an Unruh-De Witt detector arises from vacuum entanglement, extending understanding of quantum field interactions in accelerated frames.

Findings

Quantum radiation is nonzero for an accelerating detector.

Radiation originates from nonlocal vacuum correlations.

Results align with previous theoretical calculations.

Abstract

We investigate the quantum radiation produced by an Unruh-De Witt detector in a uniformly accelerating motion coupled to the vacuum fluctuations. Quantum radiation is nonvanishing, which is consistent with the previous calculation by Lin and Hu [Phys. Rev. D 73, 124018 (2006)]. We infer that this quantum radiation from the Unruh-De Witt detector is generated by the nonlocal correlation of the Minkowski vacuum state, which has its origin in the entanglement of the state between the left and the right Rindler wedges.