Timeline for Any ket as a sum of eigenkets of a given observable
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 21, 2014 at 9:44 | vote | accept | TheJerseyChemist | ||
| Aug 21, 2014 at 9:44 | comment | added | TheJerseyChemist | Of course I realise that not all observables commute, but yes thankyou for your responses. | |
| Aug 21, 2014 at 9:42 | comment | added | Danu | There are some subtleties regarding the compatibility of certain observables here, but I think you have essentially the right idea. When discussing angular momentum, for instance, the states are often labeled $|n,l,m\rangle$ for the energy, total angular momentum and angular momentum along the $z$-direction. | |
| Aug 21, 2014 at 9:28 | comment | added | TheJerseyChemist | I imagine a general state is expressible then as multiple sums of multiple eigenkets of different observables, however when we want to measure an observable A, say, then the contributions from observable B, C, D etc. are clearly zero. The simplified equations given in quantum texts neglect this, which make it seem as if a whole state can be formulated as a sum of eigenkets of a single observable all the time! | |
| Aug 21, 2014 at 9:25 | history | edited | Danu | CC BY-SA 3.0 |
added 26 characters in body
|
| Aug 21, 2014 at 9:18 | history | answered | Danu | CC BY-SA 3.0 |