- #1

Souvik

Model Lagrangian to start with? I understand that along with the H^4

term, it gives rise to dynamical symmetry breaking, which explains a

bunch of stuff (and eventually gives us a physical mass term for the

Higgs). But I find such a negative mass^2 rather unnatural, as it

implies that if symmetry remains unbroken (at high enough

temperatures), the Higgs Boson is an on-shell tachyon!

How does one justify this leap of faith in introducing the -ve mass^2,

or does it have some higher energy explanation in string theory or

something?

Thanks,

Souvik