Question

Which of the following is true for Pauli spin matrices?
(
(A) Pauli matrices anti-commute.
(B) Pauli matrices have trace equal to 1.
(C) Pauli matrices are anti-Hermitian.
(D) Pauli matrices are not unitary.​

Answer 1

Answer:

C) Pauli matrices are anti -Hermitian.

Answer 2

The true statement is Pauli matrices have trace equal to 1.

• These complex matrices are typically named after Wolfgang Pauli, a prominent physicist.  
• The Hermitian operators accurately depict the observables, so the complex Pauli matrices span the ample space of two dimensional complex Hilbert space observables.  
• These matrices are unitary and even Hermitian. They frequently retain a trace which is equal to plus one.