Timeline for Susceptibilities and response functions
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 14, 2015 at 6:43 | comment | added | user929304 | Thanks a lot for your answer. I hope it's ok if I ask 1-2 questions. 1) $\chi_{ij}$ in the first equation, do the indices mean that the response function is a 2nd rank tensor? 2) What's the intuition behind the 2nd equation? I mean the observable times its own time derivative? (what is $su$ at the end of that eq.?) 3) Why did we not care for the frequency of perturbation $\omega$ when defining the response function? (in lin. response theory, are the response functions taken as $\omega$-independent?) Thanks you very much in advance for further clarifications. | |
| Apr 13, 2015 at 20:45 | history | answered | Joshuah Heath | CC BY-SA 3.0 |