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hypothesize the graviton as the force carrier for gravity? I thought that GR does away with the notion that gravity is a "force." So, is gravity a force or is it merely an effect?

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hypothesize the graviton as the force carrier for gravity? I thought that GR does away with the notion that gravity is a "force." So, is gravity a force or is it merely an effect?

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GR is a classical theory, not a quantum theory. Many physicists believe that a quantum theory of gravity must exist that underlies GR (i.e., for which GR is the classical limit), and in such a theory, there should be a level of description at which gravity works similarly to the other three known fundamental interactions, i.e., it should have a "force carrier" particle, which is called the graviton.I thought that GR does away with the notion that gravity is a "force."

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However, after thorough study of QT and GM fusion, in future as you say we may be able to build QT on curved space-time background where gravitation is not perceived as force.

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Not necessarily. Quantum field theory can be done in a curved background spacetime; for example, this is how Hawking radiation has been treated pretty much since its discovery.Current QT stands on flat space-time.

This isn't "in future". It's been done for several decades now. See above.in future as you say we may be able to build QT on curved space-time background

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Yes it was introduced by Hawking, but not thoroughly as I hope.

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haushofer

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It could be just an effective description, similar to how we use phonons to describe sound waves. It depends on the question whether gravity is an emergent phenomenon or fundamental.GR is a classical theory, not a quantum theory. Many physicists believe that a quantum theory of gravity must exist that underlies GR (i.e., for which GR is the classical limit), and in such a theory, there should be a level of description at which gravity works similarly to the other three known fundamental interactions, i.e., it should have a "force carrier" particle, which is called the graviton.

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