If gravity is merely a consequence of massive bodies and the curvature of spacetime, why do we believe a graviton should exist in order to transmit gravitational forces.
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2$\begingroup$ Possible duplicate of Nature of gravity: gravitons, curvature of space-time or both?. See also Is the quantization of gravity necessary for a quantum theory of gravity?, Is the graviton hypothetical? and What are the reasons to expect that gravity should be quantized?. $\endgroup$– AccidentalFourierTransformCommented Feb 18, 2017 at 12:36
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1$\begingroup$ Thanks for pointing out. I'm new to stack exchange. I didn't know how to look up if this question was asked before $\endgroup$– anjaliCommented Feb 18, 2017 at 14:15
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1$\begingroup$ You're welcome, and don't worry about the duplicate. At first, it is very difficult for new users to find old questions. You'll learn with time. See you around! :-) $\endgroup$– AccidentalFourierTransformCommented Feb 18, 2017 at 14:17
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