- #1
philip041
- 107
- 0
How do you work out the commutator of two operators, A and B, which have been written in bra - ket notation?
alpha = a beta = b
A = 2|a><a| + |a><b| + 3|b><a|
B = |a><a| + 3|a><b| + 5|b><a| - 2|b><b|
The answer is a 4x4 matrix according to my lecturer...
Any help much appreciated!
I know the commutator is AB - BA but how do you do it for these big bra - ket eqns?
alpha = a beta = b
A = 2|a><a| + |a><b| + 3|b><a|
B = |a><a| + 3|a><b| + 5|b><a| - 2|b><b|
The answer is a 4x4 matrix according to my lecturer...
Any help much appreciated!
I know the commutator is AB - BA but how do you do it for these big bra - ket eqns?