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dualityQuanta Magazine
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84% Informative
In physics, duality is when a single physical system can be described with two different sets of equations.
The AdS /CFT correspondence equates two radically different views of an entire cosmos.
In one perspective, physicists see a two -dimensional universe that is flat.
In an equivalent, “dual” view, they see what they call a “bulk” universe that pops out to fill a volume.
Physicists have turned the duality around and tried to resolve mysteries of gravity by working with equations on the flat side.
The equivalence has helped us understand our real universe.
Answering that question might help clarify the nature of quantum gravity in the real universe, too.
Physicists found that in the world of all quantum evolutions, sensible interpretations are precious gems.
For almost all zigzagging paths, all the parts acted like they were in contact with all other parts, as if they had no separation in space.
Dualities like AdS /CFT are as exceptional mathematically as they seem intuitively.
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