Z2 symmetry
= Z2 symmetry
{c}
{title2=$\mathbb Z_2$ symmetry}
A <Z2 symmetry> is generated by an operation whose square is the identity. For a real <scalar field>, the sign symmetry $\phi\mapsto-\phi$ forbids every odd power of $\phi$.
= Z2 symmetry
{c}
{title2=$\mathbb Z_2$ symmetry}
A <Z2 symmetry> is generated by an operation whose square is the identity. For a real <scalar field>, the sign symmetry $\phi\mapsto-\phi$ forbids every odd power of $\phi$.