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cond-mat.str-el2026
Linear Canonical-Ensemble Quantum Monte Carlo: From Dilute Fermi Gas to Flat-Band Ferromagnetism
Tu Hong, Kun Chen, Xiao Yan Xu
We present a finite-temperature canonical-ensemble determinant quantum Monte Carlo algorithm that enforces an exact fermion number and enables stable simulations of correlated latt…
cond-mat.str-el2024
Partial Renormalization of Quasiparticle Interactions
Kun Chen
Nonlocal effective interactions are inherent to non-relativistic quantum many-body systems, but their systematic resummation poses a significant challenge known as the ``vertex pro…