Unformatted text preview: your colleagues in the class. But you must write up your solution entirely on your own. Note also that L A T E X is tremendously useful, but can be very frustrating if you are trying to ﬁnd a bug at the last minute. Make sure to start your work early enough to get help from me if you need it. 21 . Consider a theory of three real scalar ﬁelds φ j for j = 1 to 3 and three Dirac fermions ψ j for j = 1 to 3 . We will write these as vectors in an internal space, and write the Lagrangian as L ( φ ) = 1 2 ∂ μ ~ φ · ∂ μ ~ φ + i ¯ ~ ψ ·6 ∂ ~ ψm 2 2 ~ φ · ~ φ + g ¯ ~ ψ · γ 5 ‡ ~ φ × ~ ψ ·λ 4 ‡ ~ φ · ~ φ · 2 (21.1) Find the renormalization group equation 1...
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 Spring '10
 GEORGI
 Physics, Quantum Field Theory, PDF file, ZEE, Renormalization group, nonstandard input files

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