Unraveling the Mystery of Gravity's Non-Renormalizability

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SUMMARY

The discussion centers on the non-renormalizability of gravity compared to electromagnetism. Participants clarify that renormalization is a mathematical method used to address infinities in quantum field theories. Electromagnetism is renormalizable due to the properties of the photon, a spin-1 particle, while gravity is associated with the graviton, a spin-2 particle, which leads to its non-renormalizable nature. This distinction is crucial for understanding the limitations of quantum gravity theories.

PREREQUISITES
  • Understanding of quantum field theory concepts
  • Familiarity with the principles of renormalization
  • Knowledge of particle spin and its implications in physics
  • Basic grasp of electromagnetism and its quantum aspects
NEXT STEPS
  • Study the mathematical framework of quantum field theory
  • Explore the process of renormalization in detail
  • Investigate the properties of spin-1 and spin-2 particles
  • Research current theories on quantum gravity and their challenges
USEFUL FOR

Students of physics, researchers in quantum mechanics, and anyone interested in the theoretical foundations of gravity and its comparison with other fundamental forces.

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why can't gravity be renormalized?? i am just a novice in quantum physics...so i wud request to have an answer in a less technical way...
 
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Do you understand what renormalization means, and why electromagnetism *can* be renormalized?
 
i do understand wat it means...but of course i don't know the complete mathematics involved in it...correct me if my concept is wrong...it is a method used to cancel the infinities that come up in quantum field theories...on the other hand...how much i understand...electromagnetism is renormalizable becoz the quantum of light photon is a spin 1 particle...whereas graviton is a spin 2 particle...and so non-renormalizable...but y??
 

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