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Does the Higgs mechanism really account for all mass? I thought particles are free to have an intrinsic mass regardless, but that Higgs either modifies the mass or adds mass to zero-mass particles.
It’s responsible for all the mass of *fundamental* particles.. fundamental particles can’t have explicit mass terms because of gauge invariance
Does “fundamental” mean gauge field then? Reasonable
Fundamental just means non bound states—the standard model fields above the confinement scale
Mass terms introduce unwanted new terms in the Lagrangian when you change your gauge, breaking the invariance of the laws of physics under gauge change. On the other hand, the Higgs mechanism provides a gauge-invariant equivalent to a mass term to massless particles.
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