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Might There Be No Quantum Gravity After All?


What If Gravity is NOT Quantum? - YouTube

... physics is to come up with a quantum theory of gravity. But after a century of trying we really have no idea how close we are, or it it's ...

Quantum Gravity - Stanford Encyclopedia of Philosophy

Given that quantum gravity does not yet exist as a working physical theory, one might legitimately question whether philosophers have any ...

Sabine Hossenfelder: Backreaction: How to test quantum gravity

But gravity does not work like that. There is no selectivity. But is it a feeling in the first place?? After all, there is no need to feel ...

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, ...

Ask Ethan #91: Does Quantum Gravity Need String Theory? - Medium

Does the gravitational field pass through both slits? Through one-or-the-other? In General Relativity, there's no way to account for this. It's ...

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

According to Quantum mechanics, all interactions between matter particles are mediated by the force particles. ... There is no force ...

What happens after a theory of quantum gravity is found?

In summary, after a theory of quantum gravity is found, physicists may focus on solving the cosmological constant problem and the hierarchy ...

Question - No theory of quantum gravity | Space.com Forums

Gravity is probably not quantized. There is no physical evidence for it. It's just theorists playing what-if games. Like.

Jonathan Oppenheim - a postquantum theory of classical spacetime

Thomas Galley has written a viewpoint in Physics Magazine on the theory, titled "Might There Be No Quantum Gravity After All?", proclaiming that "The race ...

Scientists closer to finding quantum gravity theory after measuring ...

Even Einstein was baffled by quantum gravity and, in his theory of general relativity, said there is no realistic experiment that could show a ...

UCL: New Theory Seeks to Unite Einstein's Gravity with Quantum ...

A radical theory that consistently unifies gravity and quantum mechanics while preserving Einstein's classical concept of spacetime is announced today.

Any consistent coupling between classical gravity and quantum ...

When gravity is sourced by a quantum system, there is tension between ... [1] Thomas Galley, "Might There Be No Quantum Gravity After All?

Does quantum theory imply the entire Universe is preordained?

There is no contingency in what the Universe as a whole could have been, and no alternative possibility for how it could have started. Every ...

General Relativity and Quantum Gravity | Physics

A good theory of quantum gravity does not yet exist, but one will be needed to understand how all four forces may be unified. If we are successful, the theory ...

The Holy Grail of physics: The quest to find quantum gravity - ABC

The potential to quantise space-time — not just gravity — is what sets quantum loop theory apart from string theory. However, like all current ...

Does time exist in quantum gravity? by Claus Kiefer - FQXi Forum

Time is absolute in standard quantum theory and dynamical in general relativity. The combination of both theories into a theory of quantum gravity leads ...

The five most promising ways to quantize gravity - Backreaction

What does it mean to say that Loop Quantum Gravity "solves the problem of combining general relativity and quantum mechanics" but "it has ...

100 years after Einstein's breakthrough, tensions remain with ...

The simple fact is that we don't yet have a good and generally accepted theory of quantum gravity. The question is simply just too difficult, ...

Musings on quantum gravity | Christopher L. Bennett: Written Worlds

The problem with reconciling gravity (which is explained by Einstein's General Theory of Relativity) and quantum physics is that they seem to follow ...

Post Quantum Gravity (Random/Indeterminate Gravity)

The quote literally says nothing like this at all. Nowhere is there a denial or question about whether experimenters exist. The part is about ...