Graviton

touqra

The graviton has a spin of 2. So, that means the graviton can take possible spins: -2, -1, 0, 1, 2 ? Just want to make sure since, for a photon, even if it's spin 1, it can only take two possibilities, i.e. -1 and +1. 0 is not allowed.

dextercioby

Well, not really. The P-F field has 2 degrees of freedom in 4 space-time dimensions and thus the eigenvalues for the helicity operarator are only +2 and -2.

Daniel.

samalkhaiat

Quote by touqra

The graviton has a spin of 2. So, that means the graviton can take possible spins: -2, -1, 0, 1, 2 ? Just want to make sure since, for a photon, even if it's spin 1, it can only take two possibilities, i.e. -1 and +1. 0 is not allowed.

Do you know why the 0 is not allowed for photon? For similar reason the
(-1,0,1) are not allowed for graviton.(massles field,Traceless 2nd rank symmetric tensor rep of Poincare group).

regards

sam

Similar Threads for: Graviton
Thread	Forum	Replies
Graviton in LQG	Beyond the Standard Model	3
The Graviton, what?	Quantum Physics	3
help me...(about a graviton)	Beyond the Standard Model	1
The Graviton	Quantum Physics	4
graviton	Beyond the Standard Model	14

touqra	Graviton Tweet The graviton has a spin of 2. So, that means the graviton can take possible spins: -2, -1, 0, 1, 2 ? Just want to make sure since, for a photon, even if it's spin 1, it can only take two possibilities, i.e. -1 and +1. 0 is not allowed.

dextercioby Blog Entries: 9 Recognitions: Homework Help Science Advisor	Well, not really. The P-F field has 2 degrees of freedom in 4 space-time dimensions and thus the eigenvalues for the helicity operarator are only +2 and -2. Daniel.