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Problems with the Quantum Theory of Gravity


The fundamental problem with gravity and quantum physics

Alternatively, it's possible that gravity is always classical and continuous, and that quantum field theory, not general relativity, needs to be ...

The Problem of Quantum Gravity Is the Problem of High-Energy ...

The Problem of Quantum Gravity Is the Problem of High-Energy (Density) Quantum Gravity ... I've said something like this before, but here's ...

Why are we trying to unify gravity with quantum theory? - Reddit

The problem is that if you can detect the gravity, you can find the particle that produced the gravity. But the particle's position is " ...

The Physicist Who Bets That Gravity Can't Be Quantized

So if gravity is quantized, that means space-time is also quantized. But that doesn't work, because quantum theory only makes sense against a ...

What is the problem with quantum gravity? - Quora

Virtually every physicist in the world believes that the true theory of gravity, when we find it, will be a quantum field. That's, in part, ...

Why doesn't gravity fit into quantum theory? - Physics Stack Exchange

side answer , there is a scale problem. On its scale ( some microns until universe ) , gravity shows a complexity that doesn't appear with the 3 ...

Why Gravity Is Not Like the Other Forces | Quanta Magazine

Black holes are the reason it's difficult to combine gravity with quantum mechanics. Black holes can only be a consequence of gravity because ...

The deepest problem: some perspectives on quantum gravity - arXiv

Abstract:Quantum gravity is likely the deepest problem facing current physics. While traditionally associated with short distance ...

At which point is gravity inconsistent with quantum mechanics?

Likewise, quantum mechanics runs into serious trouble when you blow it up to cosmic dimensions. Quantum fields carry a certain amount of energy, ...

Quantum gravity - Wikipedia

As was emphasized above, quantum gravitational effects are extremely weak and therefore difficult to test. · The most widely pursued possibilities for quantum ...

What would one use a theory of quantum gravity for?

If we want to describe quantum particles extremely weakly interacting via gravity, QM with static Newtonian potentials should yield perfectly fine results.

Quantum Gravity - Stanford Encyclopedia of Philosophy

The problem stems from the fact that in preserving the diffeomorphism-invariance of general relativity — depriving the coordinates of the ...

THE HARDEST Problem in Physics Explained Intuitively - YouTube

The Trouble with Gravity: Why Can't Quantum Mechanics explain it? Arvin Ash · 1M views ; The Battle for REALITY: String Theory vs Quantum Field ...

The Trouble with Gravity: Why Can't Quantum Mechanics explain it?

Thank you to Wondrium for sponsoring today's video! Signup for your FREE trial to Wondrium here: http://ow.ly/JFFE50L1hPw REFERENCES: ...

Mathematical explanation of the failure to quantize gravity naively

You can treat gravity as a quantum field theory; the problem is that has to be an "effective" field theory, with a built in cutoff. If you ...

What is quantum gravity? - Space.com

Quantum gravity is an attempt to unite the incompatible worlds of quantum mechanics and gravity. It does so by modifying one or both theories to reconcile the ...

A Bet Against Quantum Gravity - YouTube

Is gravity quantum in nature, just like all the other particles and forces? Or is it fundamentally different? For nearly a century, ...

Conceptual Problems in Quantum Gravity and Quantum Cosmology

The search for a consistent and empirically established quantum theory of gravity is among the biggest open problems of fundamental physics.

'Quantum gravity' could help unite quantum mechanics with general ...

Researchers have measured the gravitational pull exhibited by the smallest mass yet, a breakthrough that could lead to a quantum theory of ...

Problems on the making of a quantum gravity theory - Physics Forums

Here is an argument given by Smolin: “ A background independent operator must always be finite. This is because the regulator scale and the ...