Timeline for Why is the second order perturbative correction to the ground state energy always down?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Sep 17, 2015 at 6:31 | history | protected | Qmechanic♦ | ||
| Jan 23, 2013 at 13:15 | answer | added | Vladimir Kalitvianski | timeline score: 0 | |
| Jul 15, 2012 at 8:38 | vote | accept | Ten | ||
| Jul 15, 2012 at 8:36 | vote | accept | Ten | ||
| Jul 15, 2012 at 8:36 | |||||
| Jul 14, 2012 at 19:03 | comment | added | Steve Byrnes | If I recall correctly, you can think of it as related to the variational principle in quantum mechanics. The zeroth-order guess for the ground state is not a very good guess, so its energy is too high. At higher order you have a better guess for what the ground state is, so its energy is lower. (It is not quite as simple as I'm describing ... there are details I am glossing over.) | |
| Jul 14, 2012 at 16:40 | vote | accept | Ten | ||
| Jul 15, 2012 at 8:35 | |||||
| Jul 14, 2012 at 16:35 | history | tweeted | twitter.com/#!/StackPhysics/status/224180321594253312 | ||
| Jul 14, 2012 at 15:28 | answer | added | Qmechanic♦ | timeline score: 31 | |
| Jul 14, 2012 at 14:01 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
retagged; added wiki link; retitled;
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| Jul 14, 2012 at 13:34 | history | asked | Ten | CC BY-SA 3.0 |