Dear Yambo Team and Users,
I am a bit confused with the definition of the cross section (sigma) versus the oscillator strength (f).
Since I cannot find it on Yambo forum, I found it on Octopus website:
they describe it in the TDDFT output by
f = mc / [ 2pi^2 * (Planc/2pi)^2 ] * sigma
https://www.octopus-code.org/documentat ... opagation/
But the Planc constant is proportional to kg*m/s,
thus, in my opinion,
either there is (mc)^2 or there is (Planc/2pi)^1 and not "Planc square".
Because "square" in Planc gives additional "kg" in this formula.
Do you know any Yambo publication about this?
Second question: is this definition the same for all dimensionalities: 3D, 2D, 1D, 0D?
Thank you very much,
Gosia
cross section
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cross section
dr hab. Małgorzata Wierzbowska, Prof. IHPP PAS
Institute of High Pressure Physics Polish Academy of Sciences
Warsaw, Poland
Institute of High Pressure Physics Polish Academy of Sciences
Warsaw, Poland