A newish area of interactions between quantum Monte Carlo (QMC) and experiments is in spin spectra. Recent improvements in stochastic analytic continuation have made it much easier to compare/extract the dynamical spin structure factor, which corresponds to the results of inelastic neutron scattering experiments.

Example of QMC spin structure factor: Phys. Rev. X 7, 041072 (2017)
Example of neutron scattering measurements: Phys. Rev. Lett. 124, 197203 (2020)

My problem is that I don't have a good intuition for interpreting these spectra. They represent a complex quantity that includes density of states, dispersion relations, gaps, and finite-temperature effects with a layer of noise on top.

How to identify important features from the experiments avoid getting confused by artifacts?

  • $\begingroup$ It would be great to get an answer from a neutron scattering person if there are any such people on here. $\endgroup$ Jun 1, 2020 at 10:37
  • $\begingroup$ As it's one of our oldest unanswered questions now, I tried to make it easier by reducing it from two questions to one. Also if this question is no longer needed for you, then you could flag it for a mod to close it, since it would shorten our unanswered list. If someone has an answer they can comment to ask for it to be re-opened. $\endgroup$ Dec 31, 2020 at 4:09
  • $\begingroup$ I'm open to closing it for now. $\endgroup$ Jan 1, 2021 at 15:34
  • $\begingroup$ To future readers: The user requested this question be temporarily closed. If you would like to provide an answer, comment here and the question can be reopened. $\endgroup$
    – Tyberius
    Jan 1, 2021 at 17:58


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