- #1

- 264

- 37

- Homework Statement
- Prove the commutator relation [H,a*]=hwa*

- Relevant Equations
- [H,a*]=hwa*

I am going through my class notes and trying to prove the middle commutator relation,

I am ending up with a negative sign in my work. It comes from [a

Why am I getting [a

I am ending up with a negative sign in my work. It comes from [a

^{†},a] being invoked during the commutation. I obviously need [a,a^{†}] to appear instead.Why am I getting [a

^{†},a] instead of [a,a^{†}]?