3 papers
cond-mat.stat-mech2020
Percolation of the two-dimensional XY model in the flow representation
Bao-Zong Wang, Pengcheng Hou, Chun-Jiong Huang +1
We simulate the two-dimensional XY model in the flow representation by a worm-type algorithm, up to linear system size , and study the geometric properties of the flow conf…
cond-mat.quant-gas2020
Fermionic Sign Structure of High-order Feynman diagrams in a Many-fermion System
Bao-Zong Wang, Peng-Cheng Hou, Youjin Deng +2
The sign cancellation between scattering amplitudes makes fermions different from bosons. We systematically investigate Feynman diagrams' fermionic sign structure in a representati…
cond-mat.stat-mech2018
Geometric properties of the Fortuin-Kasteleyn representation of the Ising model
Pengcheng Hou, Sheng Fang, Junfeng Wang +2
We present a Monte Carlo study of the Fortuin-Kasteleyn (FK) clusters of the Ising model on the square (2D) and simple-cubic (3D) lattices. The wrapping probability, a dimensionles…