Some left-over changed.

2025-10-31 22:58:05 +00:00 · 2020-12-23 14:34:03 -05:00 · 2020-12-23 14:34:03 -05:00 · 33bc3429a0
commit 33bc3429a0
parent 86f09bcfaa
1 changed files with 13 additions and 0 deletions
--- a/lecture_notes/1-27/Expectation
+++ b/lecture_notes/1-27/Expectation
@ -14,3 +14,16 @@ Computed Derivative d/dt <Â>:
 	ħ                               dt 


+Computed Derivative (pic) d/dt <Â> (pic)
+
+Discovered/Introduced Commutator
+Cpmpatible Observables occur when commutator is equal to 0.
+
+[Ĥ,Â] = ĤÂ - ÂĤ
+
+Constant of Motion
+------------------
+    if d/dt Â = 0 and [Ĥ,Â] = 0,
+    then Â is a constant of motion
+
+    Thm: Two operators such that [Â,B̂] always have common Eigenstates