Timeline for Integrating a function defined in Matsubara frequencies
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 2, 2018 at 22:24 | comment | added | dthed | If you think anything please contact. Thanks for the help! | |
| Oct 2, 2018 at 22:21 | comment | added | tbt | I can't think of anything else that would be useful at the moment | |
| Oct 2, 2018 at 22:10 | comment | added | dthed | As I wrote in my previous comment, I don't have access to the parameters $V_k$ and $\epsilon_k$ and so I cannot explicitly use the otherwise very useful formula that you provided. | |
| Oct 2, 2018 at 22:05 | comment | added | tbt | then you'll have to appy the second formula in my answer. You have an additional pole in $\epsilon_k $ with residue $n(\epsilon_k) V_k / (\epsilon_k - z)$. You'll have of course to sum over $k$ | |
| Oct 2, 2018 at 21:57 | comment | added | dthed | Thank you for the quick reply! The (hybridization) function F is written formally as $F(i\omega_n) = \sum\limits_k \frac{|V_k|^2}{i\omega_n - \epsilon_k}$ and note that I do not have explicit access to $V_k, e_k$. I just have the numerical data ( I could just do an polynomial expansion of course ) | |
| Oct 2, 2018 at 21:54 | history | answered | tbt | CC BY-SA 4.0 |