Dear all, I am trying to use the maxent code from ALPS. In the document hybdoc.pdf, it is being suggested that "it helps to continue the self-energies instead of the Green's functions". But the CT-QMC hybridization code only returns the imaginary frequency self-energy, and it does not mention error associated with it. While it is suggested that one should use data with error bars for the analytic continuation.
In the sample parameter file in the hybdoc.pdf, even though DATASPACE=frequency, the data points(X_i) are taken as real numbers. In general it should be a complex numbers.
Can somebody clarify this as to how to input the self-energy (complex number) and what should one do about the errors associated with the self-energy? I tried to give input as X_i=(0.5,0.5), but parameter2xml gives error when it tries to convert the input file to xml format. It says - Caught exception: parameter parse error at "{ PARTICLE_HOLE_SYMMETRY = 1 X_0".
So, can someone send some sample input file for the analytic continuation of imaginary frequency data (complex numbers) to the real frequency.
With best regards, Viveka Nand Singh