What Happens if You Fall Into a Black Hole?
https://www.youtube.com/watch?v=fCLLJ6-7ez0
Something Strange Happens When You Follow Einstein's Math (37m)
https://www.youtube.com/watch?v=6akmv1bsz1M
Book: Cox, B., & Forshaw, J. (2023). Black holes: the key to understanding the universe.
https://www.amazon.com/Black-Holes-Key-Understanding-Universe-ebook/dp/B0995XDTYB
Physics - Might There Be No Quantum Gravity After All?
https://physics.aps.org/articles/v16/203
Physicists' best theory of matter is quantum mechanics,
which describes the discrete (quantized) behavior of
microscopic particles via wave equations. Their best theory
of gravity is general relativity, which describes the
continuous (classical) motion of massive bodies via
space-time curvature.
These two highly successful theories appear fundamentally at
odds over the nature of space-time: quantum wave equations
are defined on a fixed space-time, but general relativity
says that space-time is dynamic-curving in response to the
distribution of matter. Most attempts to solve this tension
have focused on quantizing gravity, with the two leading
proposals being string theory and loop quantum gravity.
There are two strategies for this unification: either
quantize gravity or find a way to insert quantum matter into
a classical gravitational framework.
The former is clearly favored, but none of the
quantum-gravity proposals have yet been experimentally
confirmed. That would seem to leave an opening for the other
strategy, but theorists have shown-through so-called no-go
theorems-that coupling quantum matter to classical gravity
leads to inconsistencies, such as violations of the famed
Heisenberg uncertainty principle.
The Physicist Who's Challenging the Quantum Orthodoxy
https://www.quantamagazine.org/the-physicist-who-bets-that-gravity-cant-be-quantized-20230710
New theory claims to unite Einstein's gravity with quantum mechanics
https://phys.org/news/2023-12-theory-einstein-gravity-quantum-mechanics.html
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