Why does gravity need gravitons?

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SUMMARY

The discussion centers on the necessity of gravitons in understanding gravity, which is defined as the curvature of spacetime. Participants question whether gravitons are emitted by massive bodies or if spacetime itself comprises gravitons. The conversation also touches on the relationship between gravitons and photons, particularly regarding the bending of light due to gravitational influence. The consensus suggests that while gravity may require a particle-like explanation, further exploration of existing resources is encouraged for clarity.

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  • Understanding of general relativity and spacetime curvature
  • Familiarity with quantum field theory and particle physics
  • Knowledge of the role of force carriers in fundamental interactions
  • Basic comprehension of gravitational effects on light, such as gravitational lensing
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  • Research the concept of "gravitons" in quantum gravity theories
  • Explore the implications of "What causes gravity?" as discussed in related forums
  • Study the relationship between gravity and light, focusing on gravitational lensing
  • Investigate the differences between classical and quantum descriptions of forces
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Physicists, students of theoretical physics, and anyone interested in the fundamental nature of gravity and its quantum implications.

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Why does gravity need gravitons? Gravity is the curvature in spacetime and it is itself required to create a gravitational field. Does it mean that a body creates gravitons around the spacetime which is curved? Or does it mean that the spacetime is made up of gravitons?
If gravitons do really exist, then how do they influence photons and cause them to bend? Does gravitational force needs to have a particle because other forces too have a particle?
 
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Caesar_Rahil said:
Why does gravity need gravitons? Gravity is the curvature in spacetime and it is itself required to create a gravitational field. Does it mean that a body creates gravitons around the spacetime which is curved? ... Does gravitational force needs to have a particle because other forces too have a particle?

Great questions. Just to save all of us some time, always make sure to look through the previous posts in the forum, and even try using the "Search" option. Many times you will find that the question you ask has already been answered by others.

I think you'll find your question answered in "What causes gravity?"

https://www.physicsforums.com/showthread.php?t=123380

If after reading this discussion thread you still have other questions, then you might want to ask a new question then.

Robert
 

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