Consider [math]\displaystyle{ SU(2)\otimes U(1) }[/math] breaking by a scalar field with a v.e.v. (v,0) instead of (0,v). What are the consequences?
Let [math]\displaystyle{ \phi_1 }[/math] and [math]\displaystyle{ \phi_2 }[/math] be two scalar fields. One defines [math]\displaystyle{ \chi_1=(c\phi_1+s\phi_2) }[/math] as a new field. What will the algebra be for its creation and annihilation operators? Same question for fermions.
Show that the SU(3) breakings mentioned in lecture lead to gauge boson masses [math]\displaystyle{ 3gv^2\ (SU(3)\to SU(2)\otimes U(1)) }[/math] or [math]\displaystyle{ \sqrt{2g} v }[/math] and [math]\displaystyle{ \sqrt{g} v \ (SU(3)\to U(1)\otimes U(1)). }[/math])