Suppose the Higgs field goes back to its initial unstable state, as it was before electroweak symmetry breaking. Or, in other words, suppose the electroweak symmetry is restored. Since, the physical photon that we observe today was, before symmetry breaking, a linear combination of $W^{0}$ and $B^{0}$, would it "decompose" back to being that linear combination if the symmetry is to be restored?
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