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Constrained Path Monte Carlo: recent development and application
Speaker:Mingpu Qin (College of William and Mary)
Event Date and Time:Thu, 2017-03-23 14:00 - 15:00
Local Contact:Marcel Franz
I will first give a brief introduction of the auxiliary field Quantum Monte Carlo (AFQMC) method. Then I will discuss the minus sign problem and the constrained path Monte Carlo (CPMC) method which was designed to attack the minus sign problem. Finally I will present our recent development, the self-consistent CPMC method and discuss the application of this method in the study of doped two-dimensional Hubbard model. We establish the existence of stripe order in the 1/8 doped two-dimensional Hubbard model together with other numerical methods. I will conclude by discussing the potential applications of this method in the study of strongly correlated systems and the possibility to further improve it.
 Mingpu Qin, Hao Shi, and Shiwei Zhang, Phys. Rev. B 94, 235119 (2016).
 Bo-Xiao Zheng, Chia-Min Chung, Philippe Corboz, Georg Ehlers, Ming-Pu Qin, Reinhard M. Noack, Hao Shi, Steven R. White, Shiwei Zhang, Garnet Kin-Lic Chan, arXiv:1701.00054.