We show that the von Neumann entropy of physical “gravitationally dressed” observables in the exterior of any black hole is equivalent to the generalized black hole entropy.

Quanta article by Thomas Lewton on our recent series of papers on horizons “observing” quantum superpositions. Image by Kristina Armitage.

Other articles written about this work:

1. Researchers Argue Black Holes Will Destroy All Quantum States - Thomas Lewton (Wired)

2. Black holes destroy nearby quantum superpositions, thought experiment reveals - Jacklin Kwan (Physics World)

3. Black holes resolve paradoxes by destroying quantum states - Lisa Grossman (Science News)

4. Researchers Argue Black Holes Will Destroy All Quantum States (Wired)

5. Black Hole Can Destroy Nearby Quantum States, Physicists Suggest - Margaret Davis (The Science Times)

6. Extreme Horizons in Space Could Lure Quantum States Into Reality - Mike Mcrae (Science Alert)