Dear all,<div>&nbsp;I want to ask a question about the measurement in direct loop QMC.</div><div><br></div><div>1: can we use "Measure[Bond type stiffness]=True " for hardcore bosons? Since I use it, no result is returned.</div><div><br></div><div>2:&nbsp;<span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);">If I use " MEAURE_FACTOR[Name]="n" " to measure the stucture factor, the error appears. Does QMC not support such expression?&nbsp;</span></div><div><span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);"><br></span></div><div><span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);">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?</s
 pan></div><div><span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);"><br></span></div><div><span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);">Thank you very much.</span></div><div><span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);"><br></span></div><div><span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);">Sincerely,</span></div><div><span style="font-family: monospace, Courier; font-size: 12.6999998092651px; line-height: 1.1em; background-color: rgb(249, 249, 249);">Huaiming Guo</span></div>