Timeline for A confusion about base states of a quantum system
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Jan 20, 2013 at 14:36 | answer | added | Qmechanic♦ | timeline score: 2 | |
| Jan 20, 2013 at 14:35 | comment | added | Eduardo Guerras Valera | For example, the inner product that puzzles you here is not incorrect, but rather it is understood that you are dealing with a common basis whose dimension is the product of dimensions, and that that basis exists, because the observables involved commute. | |
| Jan 20, 2013 at 14:28 | comment | added | Eduardo Guerras Valera | I suggest that you fully learn the basic postulates and algebraic manipulations (it is just a few hours, very easy, the difficulties come later) before extracting conclusions. With incomplete information about the basics, Quantum Mechanics can be a hell, no matter that you are an expert in algebra. QM has its own notation and conventions, very easy after having studied blindly a couple of rules at the beginning. A good book for that is Sakurai's Modern Quantum Mechanics, the first chapters. | |
| Jan 20, 2013 at 10:57 | answer | added | Joe | timeline score: 2 | |
| Jan 20, 2013 at 10:36 | answer | added | twistor59 | timeline score: 0 | |
| Jan 20, 2013 at 10:03 | history | tweeted | twitter.com/#!/StackPhysics/status/292935366317572096 | ||
| Jan 20, 2013 at 9:30 | comment | added | Eduardo Guerras Valera | The state space (/correct basis) is the tensor product of state spaces (/of the kets of both basis), so the resulting dimension is the product of dimensions. Inner products only make sense in the common base, but usually nobody thinks about that when facing the inner product of your example, because it is equivalent to the wave function in the positions representation. | |
| Jan 20, 2013 at 8:40 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
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| Jan 20, 2013 at 8:08 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
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| Jan 20, 2013 at 7:38 | review | First posts | |||
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| Jan 20, 2013 at 7:23 | history | asked | sumit_sinha | CC BY-SA 3.0 |