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Is gravity a property-curvature of space-time it's self as descriped in GR?

Or the notion of 'graviton' is necessary in order to embed the 'classical GR theory' to the quantum's mechanics 'world' because it is considered more fundamental?

Or they can be both valid as well, because there's no such contradiction?

  • Possibles duplicates: https://physics.stackexchange.com/q/6980/2451 , https://physics.stackexchange.com/q/10088/2451 , https://physics.stackexchange.com/q/52211/2451 and links therein. – Qmechanic Oct 04 '18 at 10:58
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    Possible duplicate of What are the reasons to expect that gravity should be quantized? – Void Oct 04 '18 at 10:59
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    The usual motivator is the great success of quantum field theory, so one might expect the quantization of the gravitational field results in a gravitational particle. There are alternative theories, though, such as gravity being an emergent phenomenon. – GodotMisogi Oct 04 '18 at 11:42
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    @Qmechanic I would say that those questions are not exactly duplicates of this one as here the stress is on the particle nature – OON Oct 04 '18 at 13:32
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    The existence of graviton doesn't actually contradict gravity being spacetime curvature – OON Oct 04 '18 at 13:33
  • @OON , i could not 'defend' my question better! Please try to explain in more detail if you can! Your prelude is very interesting! –  Oct 04 '18 at 14:06
  • Whether you call it a particle or a wave is up to you since nomenclature is not important for physics, but verifiable predictions are. We now know that it does exhibit wavelike behavior from the recent detection of gravitational waves (just like light is an electromagnetic wave). A consistent low energy effective (quantum) theory of GR is perfectly fine and makes good predictions. But experimentally observing individual gravitons interacting with matter is (very) hard because gravity is very weakly coupled to matter. – Avantgarde Oct 04 '18 at 15:17
  • Well, I'm just with a phone right now anyway and already spent my patience writing last. answer:P if your question will be reopened in a couple of days I'll write the answer – OON Oct 04 '18 at 15:19
  • @aK1974 I suggest you rephrase your question a bit to emphasize the difference with questions referenced – OON Oct 04 '18 at 15:52
  • Ok, i just rephrased the question, after @OON suggestion in his comment –  Oct 13 '18 at 17:44

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