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Yes, because they are fluctuations of the metric tensor field, a symmetric rank-2 tensor. Take a look at https://en.wikipedia.org/wiki/Graviton#Gravitons_and_re
by duality 8y ago
Yes, because they are fluctuations of the metric tensor field, a symmetric rank-2 tensor. Take a look at https://en.wikipedia.org/wiki/Graviton#Gravitons_and_renormalization https://en.wikipedia.org/wiki/Graviton#Gravitons_and_renorma... for details.
- AnimalMuppet 8y agoThat does not appear to have any details that relate to your comment whatsoever. All it says is that renormalization doesn't work on gravitons. However, if I understand your comment correctly, you're saying that the underlying non-quantum theory (GR) uses a symmetric rank-2 tensor, therefore you have to have a spin 2 particle - as opposed to photons, whose underlying non-quantum theory has an antisymmetric rank-2 tensor, and therefore give rise to a spin 1 particle. Do I have that right? If so, could you point me to something that would explain why?
- krastanov 8y agoI recollect that Feynman's Lectures on Gravitation (Frontiers in Physics) has an amazing and detailed explanation.
- drjesusphd 8y ago"Quantum field theory in a nutshell" also covers this well.
- AnimalMuppet 8y agoTwo-days-later addition: If you drop the # and following from the URL, it does have details that relate to duality's comment.