My main question is about brief information about gravity. For example, why is gravity not quantum? What is the main problem with gravity? Why is gravity the weakest force? Of course, from the perspective of researchers who firmly believe in this theory. Not those who do not consider gravity as a fundamental force.
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1Does this answer your question? A list of inconveniences between quantum mechanics and (general) relativity? – John Rennie Nov 16 '22 at 16:20
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There is a very large body of study on how gravity might be quantum. A few months ago I attended the "Quantum Gravity Institute" symposium in Vancouver. It was attended by many leading physicists, including several Nobel Lauriets. You can see the abstracts here: https://conference.quantumgravityinstitute.ca/abstracts/ Choose your favourite and delve deeper. – foolishmuse Nov 16 '22 at 16:40
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Most physicists assume that gravity must be quantized. They just aren’t sure yet about how to do that properly. – Ghoster Nov 16 '22 at 21:13
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@foolishmuse Which one of them is your favourite? – KP99 Nov 17 '22 at 01:20
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@KP99 I'm a big proponent of Loop Quantum Gravity, as put forth by Abhay Ashtekar and others. You can find my highly speculative concept of gravity based on LQG here: https://vixra.org/abs/2202.0156 – foolishmuse Nov 17 '22 at 22:23
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@foolishmuse Interesting! I am fond of Twistor theory , but not as a theory of quantum gravity, rather I see it as a mathematical tool which can set the foundation for correct QG theory. – KP99 Nov 18 '22 at 02:45