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Kyleric
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"Experimental evidence like the hydrogen fine structure and the Stern-Gerlach experiment suggest that an electron has an intrinsic angular momentum, independent of its orbital angular momentum. These experiments suggest just two possible states for this angular momentum, and following the pattern of quantized angular momentum, this requires an angular momentum quantum number of 1/2." http://hyperphysics.phy-astr.gsu.edu/hbase/spin.html
So if spin is determined by experiment, how do we know the graviton has spin 2 if none have been observed?
One argument I read about is that it is a tensor field of rank 2. But how do we know that a tensor field of rank n has spin n? Is it just by inductive reasoning, because experiment showed that rank 1 has spin 1 and rank 0 has spin 0?
So if spin is determined by experiment, how do we know the graviton has spin 2 if none have been observed?
One argument I read about is that it is a tensor field of rank 2. But how do we know that a tensor field of rank n has spin n? Is it just by inductive reasoning, because experiment showed that rank 1 has spin 1 and rank 0 has spin 0?