Timeline for Matsubara frequencies and analytic continuation - Domain and uniqueness
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Jun 23, 2020 at 17:02 | history | bounty ended | CommunityBot | ||
| S Jun 23, 2020 at 17:02 | history | notice removed | CommunityBot | ||
| Jun 22, 2020 at 11:54 | comment | added | Vivek | The paper that directly addresses your question head on on the analytic continuation part is: aip.scitation.org/doi/pdf/10.1063/1.1703704 | |
| Jun 22, 2020 at 11:47 | comment | added | Vivek | The case you're referring to is when $G^R(\omega)$ is analytically extended to the upper half plane. It is known from the imaginary time formalism that if you do the said replacement to the imaginary time GF in rational form , you'd get $G^R(\omega)$. The other option is to extend $G^A(\omega)$ to the lower half plane. Then you'd do the said replacement with the sign of the (imaginary) infinitesimal reversed on the imaginary time GFs obtained in the lower half plane to get $G^A$. You do exclude the real line - that's the branch cut, if you will, of the resolvent defined on the complex plane. | |
| S Jun 15, 2020 at 15:47 | history | bounty started | Aaron | ||
| S Jun 15, 2020 at 15:47 | history | notice added | Aaron | Draw attention | |
| Apr 24, 2020 at 21:10 | answer | added | spiridon_the_sun_rotator | timeline score: 2 | |
| Apr 24, 2020 at 18:53 | comment | added | Seth Whitsitt | A relevant reference on this question: aip.scitation.org/doi/10.1063/1.1703704 | |
| Apr 24, 2020 at 18:00 | history | tweeted | twitter.com/StackPhysics/status/1253745533677600770 | ||
| Apr 24, 2020 at 16:08 | history | asked | Aaron | CC BY-SA 4.0 |