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Past exam of the mathematics course of the University of Cambridge / 2009 / iii / Paper 47 / 4 / c

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2009 iii Paper 47 4
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c
In the usual real-vacuum phase convention the complex scalar Higgs doublet obeys
ϕ(x)⟼ϕ∗(xP​).​
(1)
Charge conjugation complex-conjugates the doublet, while parity changes its argument without a Lorentz-index factor because it has spin zero. A fixed gauge rotation or intrinsic scalar phase may be included in an equivalent convention; the displayed choice leaves the standard real neutral Higgs expectation value invariant.

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