- #1

dyn

- 773

- 62

I have seen an example of commutator of the Parity operator of the x-coordinate , P

_{x}and angular momentum in the z-direction L

_{z}calculated as [ P

_{x}, L

_{z}] ψ(x , y) = -2L

_{z}ψ (-x , y)

I have tried to calculate the commutator without operating on a wavefunction and just by expanding commutator brackets and I get [ P

_{x}, L

_{z}] = 2P

_{x}L

_{z}

Are these 2 answers equivalent and if so how do I get from my answer to the given answer ?

Thanks