First I dont have extensive knowledge about gravity beyond General Relativity, so please forgive my ignorance about this subject. I have confusion about the relation between GR and QM and I just want a general picture so that I can connect the dots.(adsbygoogle = window.adsbygoogle || []).push({});

My questions:

1- Why do we need quantum gravity? and why GR gravity does not work with QM?

2- In GR gravity is just curvature in spacetime it is not a force. So why do we need to quantize gravity if it is not a field? and why the graviton is proposed? doesn't that contradict with GR?

3- The microscopic world is dominated by forces much stronger that gravity, and gravity is already very week at such small scale, so why do we care about gravity at the quantum level?

Thanks,

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# B Question about GR and Quantum gravity

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