New research could revolutionize our understanding of the universe.
New research could revolutionize our understanding of the universe.
New research could revolutionize our understanding of the universe.
-
This might be one of the worst, least-descriptive titles I’ve ever seen
-
I generally always have an issue with headlines that say something could happen, too.
"New research could bring about the total destruction of earth." Could have been a headline talking about the LHC making microscopic black holes.
-
-
Steffen Gielen, Lucía Menéndez-Pidal.
Black Hole Singularity Resolution in Unimodular Gravity from Unitarity
Physical Review Letters, 2025; 134 (10)
DOI: 10.1103/PhysRevLett.134.101501i can't even understand the very beginning of the discussion : why are physicists so obsessed with "information loss" ?
It has long been stated that a quantum theory of black hole dynamics that is required to be unitary must deviate strongly from semiclassical expectations. Usually this is discussed in the context of unitarity of black hole formation and evaporation, leading to the famous issue of information loss.[24]*
[24]* : S. W. Hawking, Breakdown of predictability in gravitational collapse
Phys. Rev. D 14, 2460 (1976).-
To oversimplify, "information" is a very specific thing in quantum physics. Classical physics has the rule that energy can change form but cannot either be created or destroyed.
Information works the same way in quantum physics, which makes black holes seem like a problem since their event horizons are inescapable and anything that falls inside is lost.
-
Thanks, your explanation is interesting and makes sense at my level of abstraction.
Eventually i would like it, if some physicist could come up with a cosmology where energy could be created and entropy of a close system could decrease ... in specific conditions and in our present day universe.
Also, in my naive understanding, chaotic pendulums creates information.
-
-
-
Water might be wet, updates to follow as this story develops. Over to you, Pat.
-
Yes, that's how science usually works