Lab Light Reveals Direct Hawking Backreaction in Black-Hole Analog
Physicists used ultrafast laser pulses in a patterned optical fiber to create a black-hole analog that emits Hawking radiation and, for the first time, observed backreaction: a tiny energy shift in the initiating pulse caused by the radiation. The study suggests a direct, biquadratic interaction mechanism, helping explain how Hawking radiation could arise in gravity, though real black holes remain unobservable. If the same mechanism appears in other analogs, it could inform the black hole information paradox.
