$Z_{2}$ topological invariant exist for Kitaev model.

What symmetries does it conserve? And to what symmetry class it belongs to?

$Z_{2}$ topological invariant exist for Kitaev model.

What symmetries does it conserve? And to what symmetry class it belongs to? The hamiltonian for kitaev model can be written as $$ H=\sum_k \phi_k^\dagger \begin{pmatrix} \xi(k) & 2i\Delta \sin(k)\\ -2i\Delta \sin(k ) & -\xi(k)\end{pmatrix}\phi(k) $$

$Z_{2}$ topological invariant exist for kitaev model.

what symmetries does it conserve? and to what symmetry class it belongs to?

$Z_{2}$ topological invariant exist for Kitaev model.

What symmetries does it conserve? And to what symmetry class it belongs to?