Saturday, July 6, 2019

standard model - How does a Higgs triplet transform under SU(2)LtimesU(1)Y when written as a 2times2 matrix?



I recently learned that a Higgs triplet can be written as a 2×2 matrix:


Δ=(Δ+2Δ++Δ0Δ+2)


Typically, an SU(2) triplet ϕ transform like:


ϕexp(iTθ)ϕ


where T are some 3×3 matrix representation of the SU(2) generators. How to modify the T's such that Δ transform like a triplet under SU(2)L?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

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