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Thursday, 28 June 2012
Wess-Bagger Weyl spinor notation
η
μ
ν
=
diag
(
−
1
,
1
,
1
,
1
)
1
=
ε
12
=
−
ε
12
ε
0123
=
−
ε
0123
=
1
ψ
α
=
ε
α
β
ψ
β
;
ψ
α
=
ε
α
β
ψ
β
ψ
α
˙
=
ε
α
˙
β
˙
ψ
β
˙
;
ψ
α
˙
=
ε
α
˙
β
˙
ψ
β
˙
ψ
χ
=
ψ
α
χ
α
=
−
ψ
α
χ
α
=
χ
α
ψ
α
=
χ
ψ
ψ
¯
χ
¯
=
ψ
¯
α
˙
χ
¯
α
˙
=
−
ψ
¯
α
˙
χ
¯
α
˙
=
χ
¯
α
˙
ψ
¯
α
˙
=
χ
¯
ψ
¯
(
χ
ψ
)
†
=
(
χ
α
ψ
α
)
†
=
ψ
¯
α
˙
χ
¯
α
˙
=
ψ
¯
χ
¯
=
χ
¯
ψ
¯
Ψ
D
=
[
χ
α
ψ
α
˙
]
γ
μ
=
[
σ
μ
σ
¯
μ
]
γ
μ
=
[
σ
μ
σ
¯
μ
]
σ
μ
=
(
−
1
,
σ
→
)
;
σ
¯
μ
=
(
−
1
,
−
σ
→
)
σ
¯
μ
α
˙
α
=
ε
α
˙
β
˙
ε
α
β
σ
β
β
˙
μ
tr
σ
μ
σ
¯
ν
=
σ
α
α
˙
μ
σ
¯
ν
α
˙
α
=
−
2
η
μ
ν
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