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Is the analytic properties of Fermionic self energy well known? 
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#1
Apr1614, 11:46 AM

P: 27

For arbitrary Fermionic self energy, \Sigma(i wn) with wn=(2n+1)pi T, its real part is always an even function of wn while its imaginary part is always an odd function of wn.



#2
May414, 10:46 PM

Admin
P: 9,578

I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?



#3
May514, 12:59 PM

P: 27

Sorry, I think the issues about this analytic property of self energy is well known, or easily derived. I was curious why people would not enforce it in their calculation when say they design self energy ansatz for possible analytic continuation.



#4
May914, 12:50 PM

P: 27

Is the analytic properties of Fermionic self energy well known?
Or, more specifically, \sigma(iw)=\sigma(iw)*



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