(1+1)D Calculation provides evidence that quantum entanglement survives a firewall

TL;DR

This study shows that quantum entanglement between particle detectors can survive a firewall in (1+1)D spacetime, suggesting firewalls may not necessarily destroy entanglement and could influence black hole information paradox discussions.

Contribution

It provides the first analysis of entanglement behavior across a firewall in (1+1)D, indicating entanglement can persist despite firewall presence.

Findings

Firewall effect is minor and does not eliminate entanglement.

Entanglement can be preserved or even enhanced by the firewall.

Supports the idea that firewalls may not cause catastrophic entanglement loss.

Abstract

We analyze how pre-existing entanglement between two Unruh-DeWitt particle detectors evolves when one of the detectors falls through a Rindler firewall in (1+1)-dimensional Minkowski space. The firewall effect is minor and does not wash out the detector-detector entanglement, in some regimes even preserving the entanglement better than Minkowski vacuum. The absence of cataclysmic events should continue to hold for young black hole firewalls. A firewall's prospective ability to resolve the information paradox must hence hinge on its detailed gravitational structure, presently poorly understood.