About the measurement in direct loop QMC
Dear all, I want to ask a question about the measurement in direct loop QMC. 1: can we use "Measure[Bond type stiffness]=True " for hardcore bosons? Since I use it, no result is returned. 2: If I use " MEAURE_FACTOR[Name]="n" " to measure the stucture factor, the error appears. Does QMC not support such expression? 3: When I measure the structure factor, are the structure factor with all possible momentum provided? Can I specify the wanted momentum, such as: 2\pi/3 for 1D? Thank you very much. Sincerely, Huaiming Guo
On 11 Oct 2015, at 07:23, 郭怀明 <hmguo@buaa.edu.cn> wrote:
Dear all, I want to ask a question about the measurement in direct loop QMC.
1: can we use "Measure[Bond type stiffness]=True " for hardcore bosons? Since I use it, no result is returned.
Watch out for upper and lower case. It should be Bond Type Stiffness
2: If I use " MEAURE_FACTOR[Name]="n" " to measure the stucture factor, the error appears. Does QMC not support such expression?
What error appears and what code? Also, please look at http://alps.comp-phys.org/mediawiki/index.php/Tutorials:MeasureHOWTO for the exact syntax
3: When I measure the structure factor, are the structure factor with all possible momentum provided? Can I specify the wanted momentum, such as: 2\pi/3 for 1D?
It currently gives all moments. If you just want specific ones you will need to modify the code Matthias Troyer
participants (2)
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Matthias Troyer
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郭怀明