A particular matrix is both Hermitian and unitary. Show that its eigenvalues are all ±1. Note. The Pauli and Dirac matrices are specific examples. | Numerade

11 i if u is a unitary matrix show that det ul hint rcmember uu i and take determninants of both sides noting that det u det u why it follows that real unitary matrix has determinant equal t 71102

Introduction to eigenvalues and eigenvectors