Comp-phys-alps-users

comp-phys-alps-users@lists.phys.ethz.ch

January 2019

3 participants
2 discussions

DWA convergence problem
by Oskar Amadeusz Prośniak 22 Jan '19

22 Jan '19

Dear all, while performing some simulations in BH model (DWA code), I encountered problems with convergence in the vicinity of the critical point for small temperature T and a large linear dimension L. What is the root cause for the complexity of the simulation in such a case? I seem to get a large systematic error (which looks non-random as a a function of hamiltonian coupling constants). Is there any way to improve convergence? While searching output hdf5 files for additional clues, and the DWA documentation, I have encountered the error_convergence in output files. Could I ask what exactly it is? Is it related to the "binning analysis" which has been discussed throughout the alps website? Is there is a build-in method for convergence analysis? that would be very helpful. Best regards, Oskar A. Prośniak

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'Nonlocal' in the worm QMC
by 郭怀明 13 Jan '19

13 Jan '19

Dear all, I have a problem related to the worm QMC. I find there is a parameter 'nonlocal', which is set to 0 in the examples. I wonder what is the meaning of the parameter. Is it a systematic parameter for the method? Thank you for your reply. Sincerely, Huaiming Guo Beihang Unviersity

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