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298 November 7, 2013<br />

|2, 1〉 = |+00〉 − |0 + 0〉 − |+ − +〉 + |− + +〉<br />

|2, 0〉 = − |0 − +〉 + |−0+〉 − |+0−〉<br />

+ |0 + −〉 − 2 |+ − 0〉 + 2 |− + 0〉<br />

|2, −1〉 = |+ − −〉 − |− + −〉 + |−00〉 − |0 − 0〉<br />

|2, −2〉 = |0 − −〉 − |−0−〉<br />

spin-1(1) :<br />

|1, 1〉 = 6 |+ + −〉 + 3 |0 + 0〉 + 3 |+00〉<br />

+ |+ − +〉 + |− + +〉 − 2 |00+〉<br />

|1, 0〉 = 3 |0 + −〉 + 3 |+0−〉 + 3 |−0+〉<br />

+3 |0 − +〉 − 2 |+ − 0〉 − 2 |− + 0〉 + 4 |000〉<br />

|1, −1〉 = 2 |00−〉 − 3 |−00〉 − 3 |0 − 0〉<br />

spin-1(2) :<br />

− |+ − −〉 − |− + −〉 − 6 |− − +〉<br />

|1, 1〉 = |+00〉 − |0 + 0〉 + |+ − +〉 − |− + +〉<br />

|1, 0〉 = |0 + −〉 − |+0−〉 + |0 − +〉 − |−0+〉<br />

|1, −1〉 = |+ − −〉 − |− + −〉 + |0 − 0〉 − |−00〉<br />

spin-1(3) :<br />

|1, 1〉 = |+ − +〉 + |− + +〉 + |00+〉<br />

|1, 0〉 = |+ − 0〉 + |− + 0〉 + |000〉<br />

|1, −1〉 = |+ − −〉 + |− + −〉 + |00−〉<br />

spin-0 :<br />

|0, 0〉 = |+ − 0〉 + |−0+〉 + |0 + −〉<br />

− |0 − +〉 − |+0−〉 − |− + 0〉 (10.216)<br />

Note that the spin-0 state is totally antisymmetric : obviously, this is the only<br />

possible such state in three space dimensions. We can also compute the ‘partial’<br />

completeness relations pertaining to each spin sector. Some algebra teaches us<br />

that these are the following set of mutually orthogonal projection operators :<br />

spin-3 :<br />

1<br />

6<br />

3∑<br />

m=−3<br />

|3, m〉 µνρ 〈3, m| αβγ<br />

=<br />

(<br />

∆ µ α∆ ν β∆ ρ γ + ∆ µ β∆ ν γ∆ ρ α + ∆ µ γ∆ ν α∆ ρ β<br />

+ ∆ µ β∆ ν α∆ ρ γ + ∆ µ α∆ ν γ∆ ρ β + ∆ µ γ∆ ν β∆ ρ α<br />

− 1 (<br />

∆ µν ( ∆ ρ α∆ βγ + ∆ ρ β∆ γα + ∆ ρ )<br />

γ∆ αβ<br />

15<br />

+ ∆ νρ ( ∆ µ α∆ βγ + ∆ µ β∆ γα + ∆ µ )<br />

γ∆ αβ<br />

)

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