Abstract
AbstractA recently developed quantum Monte Carlo approach to the Holstein model with one electron [Phys. Rev. B 69, 024301 (2004)] is extended in several aspects. In addition to a straight‐forward generalization to higher dimensions, a checkerboard breakup for the hopping part of the Hamiltonian is introduced, which allows significantly faster simulations. Moreover, results are extrapolated towards the limit of continuous imaginary time to remove the error due to the Trotter–Suzuki approximation. The performance and accuracy of the current approach are compared to existing quantum Monte Carlo methods. To demonstrate the applicability of our method for almost arbitrary parameters, we study the small‐polaron crossover in one to three dimensions by calculating the electronic kinetic energy. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
