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To date there is no possibility of the existence of the so-called Hawking radiation, one from the physicist Stephen Hawking predicted volatile thermal radiation from black holes, to be proven experimentally. But that could change soon. By creating a special quantum circuit, which is called a kind of “Black hole laser“Would function, some properties of a black hole could essentially be simulated, as researchers at Hiroshima University suggest. This would allow Hawking radiation to be observed without having to look for it in real black holes.
Black holes bend space-time so much that a deep funnel is created, not even that electromagnetic waves can escape.
Model should use metamaterial
There are different models in which space-time is replaced by other materials such as water and its The speed of the current is increased so much that it is greater than the speed at which waves would propagate on the surface of the water and thus could not escape. The researchers from Japan propose for their novel Model a metamaterial that has an artificially produced structure, the permeability of which for electric and magnetic fields does not exist in nature.
It should have a construction with which the particles inside can move faster than the light that shines through. “That Metamaterial allows Hawking radiation to move back and forth between horizons, ”explains Haruna Katayama from the Hiroshima University in Japan.
Josephson effect added
The aim is to amplify the Hawking radiation so much that it becomes measurable. The so-called Josephson Effectt are used – a phenomenon in which a current flow is generated without voltage, as reported by Sciencealert. The combination of the metamaterial and the Josephson effect could theoretically research what a black hole might look like.
The system would enable the measurement of a quantum correlation between two particles – one inside and one outside the event horizon – without having to observe both. The event horizon is one Interface in space-time. It is believed that events beyond this interface are in principle not visible when observers are on this side of the interface.
It could take some time before such a laser can be built. The study was published in Scientific Reports.