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Srednicki — Quantum Field Theory
· Problem 2.2
Lorentz Invariance — Mark Srednicki
Physics — QFT · lorentz-invariance
Problem
Verify that eq. (2.14) follows from
U
(
Λ
)
−
1
U
(
Λ
′
)
U
(
Λ
)
=
U
(
Λ
−
1
Λ
′
Λ
)
U(\Lambda)^{-1}U(\Lambda')U(\Lambda) = U(\Lambda^{-1}\Lambda'\Lambda)
U
(
Λ
)
−
1
U
(
Λ
′
)
U
(
Λ
)
=
U
(
Λ
−
1
Λ
′
Λ
)
.
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