Quantum Monte Carlo and the Hubbard Model

17th International Conference on Recent Progress in Many-Body Theories

Scalapino, Douglas^1

Physics Department, University of California, Santa Barbara CA 93106-9530, United States^1

关键词: Fermion-sign problem;    Monte Carlo calculation;    Pairing interactions;    Quantum monte carlo;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/529/1/012002/pdf
DOI  :  10.1088/1742-6596/529/1/012002

来源: IOP

【 摘 要 】

Here we discuss quantum Monte Carlo and the Hubbard model. We note that while there is a fermion sign problem for the doped Hubbard model, Monte Carlo calculations have shown that the leading pairfield susceptibility has d-wave symmetry and that the pairing interaction is mediated by S 1 particle-hole fluctuations.