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TRIQS / triqs_0.x

DEPRECATED -- This is the repository of the older versions of TRIQS
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on the analytical continuation #93

Closed lucasem-zz closed 11 years ago

lucasem-zz commented 11 years ago

Dear All

I would like to use the code I found on the website: http://www.phys.lsu.edu/~jarrell/ to make the analytical continuation of the QMC data. Jarrell’s code reads the G(tau) as function of the MC steps. Can TRIQS print these data in a txt file? If yes what are the keywords?

Thanks in advance. Luca

mferrero commented 11 years ago

Hi, sorry for the late answer. You can save a Green's function in a text file with

G.save("filename")

However, while this command still works, it will become obsolete in the future.

lucasem-zz commented 11 years ago

Hi thank you for your answer. As already suggested in https://github.com/TRIQS/TRIQS/issues/90 the G.save command allows to get the local green function as function of the Matsubara frequencies. If I'm not wrong, the code that I would like to use to make the analytical continuation would read G as function of the QMC steps. Can triqs make what I need?

mferrero commented 11 years ago

I do not know the code you want to use, but it would surprise me if the Green's functions at every QMC steps were needed! It would take huge amounts of space! In general MaxEnt methods just need the data of the Green's function with their Monte Carlo error bars.

aeantipov commented 11 years ago

If you really need Green's functions as a function of number of steps you could specify different N_Cycles in a python loop (or make a loop over them) and generate and save your Green's functions accordingly.