Timeline for Is there an experiment showing that general relativity and the standard model contradict each other?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Nov 20, 2022 at 13:43 | comment | added | Andrew | I'd like to request that people please don't use the comment thread of this answer for discussion that is not relevant to improving the main content of the answer. | |
| Nov 20, 2022 at 9:55 | comment | added | Ryder Rude | @JohnDoty I don't understand. What is an example where "model" and "explanation" differ? Do you mean that Standard Model doesn't predict what fields should exist? | |
| Nov 19, 2022 at 16:38 | comment | added | Andrew | @JohnDoty Thank you for your input. | |
| Nov 19, 2022 at 14:41 | comment | added | John Doty | The Standard Model cannot explain anything, since it is carefully crafted to match certain phenomena. What it does is model phenomena. Confusing "models" with "explanations" is damaging to physics, since it obfuscates the crucial difference between physics and mathematics. | |
| Nov 19, 2022 at 13:33 | comment | added | Ryder Rude | Yeah, it doesn't preserve the beauty of general relativity by treating it perturbatively like a force. General Relativity allows non-trivial spacetimes (like loops) which can't be taken as a perturbation on flat space. It'll take some huge conceptual leap to quantum mechanically account for the nature of time in GR. | |
| Nov 19, 2022 at 13:09 | comment | added | Andrew | @RyderRude Well, in the EFT approach, it is just the fluctuations around a fixed classical background that are quantized. The causal structure still comes from the background. So it doesn't solve some of the hard conceptual problems of quantum gravity. | |
| Nov 19, 2022 at 13:03 | comment | added | Ryder Rude | indeed, Schwartz's book said it predicts some horribly tiny correction to Mercury's tilt or something. Still, it's satisfying to know that we have a theory which treats the metric as probabilistic. | |
| Nov 19, 2022 at 13:00 | comment | added | Andrew | @RyderRude You're right that the EFT of gravity allows you to include quantum corrections in a systematic way, to any desired order in $E/M_{\rm Pl}$ (where $E$ is the energy of the process being considered). However, the net result is that quantum corrections are negligibly small until you reach the Planck scale. | |
| Nov 19, 2022 at 1:34 | comment | added | Ryder Rude | Is it true that the EFT treats gravity classically? I thought it treated Gravity Quantum mechanically and it's just that the perturbation series was renormalizable below the Planck energy. | |
| Nov 18, 2022 at 12:47 | history | answered | Andrew | CC BY-SA 4.0 |