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=== 2024 === {{Tweet |image=Eric profile picture.jpg |nameurl=https://x.com/EricRWeinstein/status/1834702103211917754 |name=Eric Weinstein |usernameurl=https://x.com/EricRWeinstein |username=EricRWeinstein |content=For some reasons that have never been explained or justified leaders in physics started making the claim that [[General Relativity|GR]] *was* also a gauge theory. This was done by claiming that general coordinate invariance in the form of the diffeomorphism group is a kind of Gauge Transformation. Which it clearly is not. This is absurd. Gauge transformations move the fibers and are defined not to move space time where as diffeomorphisms move space time directly. So: why claim that GR is a kind of gauge theory? The only payoff I see is that this allows us to pretend that the [[Standard Model|SM]] vs [[General Relativity|GR]] incompatibility is classical vs quantum where it is staring us in the face that it is instead contraction-based ([[General Relativity|GR]]) vs Gauge Transformed ([[Standard Model|SM]]). The only reason this is at all controversial is that the people saying it were thought to be the leaders 40 years ago. That didn’t work out. We have 40 years lost as a result. But the truth is anyone can see the incompatibility between gravity and [[Gauge Theory|gauge theory]] if they are not being told that gravity is a special kind of [[Gauge Theory|gauge theory]]. Which it absolutely is not as formulated by Grossman, Einstein and Hilbert. [[Morals|Moral]]: The problem holding us back from a Theory of everything is **Classical**, and not Quantum. The quantum comes as desert after classical compatibility. It’s not the main issue. A red hearing that throws us off following the scent. It’s a distraction that should have fooled almost no one who was thinking for his or her self. |thread= {{Tweet |image=Eric profile picture.jpg |nameurl=https://x.com/EricRWeinstein/status/1834698277356527999 |name=Eric Weinstein |usernameurl=https://x.com/EricRWeinstein |username=EricRWeinstein |content=This is what is blocking progress in my opinion for physics to go beyond [[Albert Einstein|Einstein]] and [[General Relativity]]. 40 years ago, the leaders of physics started claiming that gravity had to be quantized to be compatible with the [[Standard Model]]. But the incompatibility is *not* Quantum vs Classical field theory. The *classical* field theory of the [[Standard Model]] is already not compatible with classical [[General Relativity]]. [[General Relativity]], at least as it is now, simply cannot be gauged so as to make it a true gauge theory, because Gauge transformation does *not* commute with the Ricci Contractions used in the field equations, and within the Einstein Hilbert action. |quote= {{Tweet |image=postquantum-profile-CoJxMwrT.jpg |nameurl=https://x.com/postquantum/status/1834184677860491584 |name=Jonathan Oppenheim |usernameurl=https://x.com/postquantum |username=postquantum |content=I wish I deserved the heretic moniker, but isn’t asking whether spacetime is quantum or classical just common sense? After all, general relativity (GR) - our theory of gravity and spacetime - is special. It isn’t a gauge theory, and gravity isn’t a force. 1/ |timestamp=10:57 AM · Sep 12, 2024 }} |timestamp=8:58 PM · Sep 13, 2024 }} |timestamp=9:14 PM · Sep 13, 2024 }}
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