Robust Fermi-Liquid Instabilities in Sign Problem-Free Models
Robust Fermi-Liquid Instabilities in Sign Problem-Free Models
Determinant quantum Monte Carlo (DQMC) is a powerful numerical technique to study many-body fermionic systems. In recent years, several classes of sign-free (SF) models have been discovered, where the notorious sign problem can be circumvented. However, it is not clear what the inherent physical characteristics and limitations of SF models …