%0 Journal Article %1 PhysRevB.100.075119 %A Kaufmann, J. %A Gunacker, P. %A Kowalski, A. %A Sangiovanni, G. %A Held, K. %D 2019 %I American Physical Society %J Phys. Rev. B %K a %N 7 %P 075119 %R 10.1103/PhysRevB.100.075119 %T Symmetric improved estimators for continuous-time quantum Monte Carlo %U https://link.aps.org/doi/10.1103/PhysRevB.100.075119 %V 100 %X We derive equations of motion for Green's functions of the multi-orbital Anderson impurity model by differentiating symmetrically with respect to all time arguments. The resulting equations relate the one- and two-particle Green's function to correlators of up to six particles at four times. As an application we consider continuous-time quantum Monte Carlo simulations in the hybridization expansion, which hitherto suffered from notoriously high noise levels at large Matsubara frequencies. Employing the derived symmetric improved estimators overcomes this problem.

@article{PhysRevB.100.075119, abstract = {We derive equations of motion for Green's functions of the multi-orbital Anderson impurity model by differentiating symmetrically with respect to all time arguments. The resulting equations relate the one- and two-particle Green's function to correlators of up to six particles at four times. As an application we consider continuous-time quantum Monte Carlo simulations in the hybridization expansion, which hitherto suffered from notoriously high noise levels at large Matsubara frequencies. Employing the derived symmetric improved estimators overcomes this problem.}, added-at = {2020-03-23T09:58:36.000+0100}, author = {Kaufmann, J. and Gunacker, P. and Kowalski, A. and Sangiovanni, G. and Held, K.}, biburl = {https://www.bibsonomy.org/bibtex/2c09ddbe883a4909014f4219c356c7767/ctqmat}, day = 8, description = {Phys. Rev. B 100, 075119 (2019) - Symmetric improved estimators for continuous-time quantum Monte Carlo}, doi = {10.1103/PhysRevB.100.075119}, interhash = {a2a8fea8c0ad66a65919629eb594b6cc}, intrahash = {c09ddbe883a4909014f4219c356c7767}, journal = {Phys. Rev. B}, keywords = {a}, month = {8}, note = {cite arxiv:1906.00880Comment: 8 pages + 7 pages appendix, 6 figures}, number = 7, numpages = {15}, pages = 075119, publisher = {American Physical Society}, timestamp = {2023-01-16T14:49:29.000+0100}, title = {Symmetric improved estimators for continuous-time quantum Monte Carlo}, type = {Publication}, url = {https://link.aps.org/doi/10.1103/PhysRevB.100.075119}, volume = 100, year = 2019 }