45 citations · 110 across the 19 of their papers we have counts for
9 papers · 1 filter
Ab initio simulation of the universal properties of unitary Fermi gas in a harmonic trap
Yunuo Xiong, Hongwei Xiong
Chang and Bertsch [Phys. Rev. A 76, 021603(R) (2007)] proposed a simple formula for the ground state energy of a unitary Fermi gas in a harmonic trap, based on their Green's functi…
Ab initio simulations of the thermodynamic properties and phase transition of Fermi systems based on fictitious identical particles and physics-informed neural networks
Yunuo Xiong, Hongwei Xiong
Fictitious identical particle thermodynamics has emerged as a powerful tool to overcome the fermion sign problem, enabling highly accurate simulations of one thousand fermions in w…
Quadratic scaling path integral molecular dynamics for fictitious identical particles and its application to fermion systems
Yunuo Xiong, Shujuan Liu, Hongwei Xiong
Recently, fictitious identical particles have provided a promising way to overcome the fermion sign problem and have been used in path integral Monte Carlo (PIMC) to accurately sim…
Numerical simulation of two-component attractive Fermi gases based on parametrized partition function
Yunuo Xiong, Hongwei Xiong
The zero-temperature and finite-temperature thermodynamics of two-component Fermi gases with finite-range attractive interaction suffer from fermion sign problem, which seems like…
On the thermodynamics of fermions at any temperature based on parametrized partition function
Yunuo Xiong, Hongwei Xiong
In this work we study the recently developed parametrized partition function formulation and show how we can infer the thermodynamic properties of fermions based on numerical simul…
Parametrized path integral formulation for large fermion systems
Xiong Yunuo, Xiong Hongwei
The exchange antisymmetry between identical fermions gives rise to the well known fermion sign problem, in the form of large cancellation between positive and negative contribution…