45 citations · 110 across the 20 of their papers we have counts for
20 papers
Path Integral Monte Carlo for Fictitious Identical Particles with ξ-Ensemble
Yunuo Xiong
In this work, a path integral Monte Carlo (PIMC) algorithm for fictitious identical particles (FIP) is proposed by introducing a -ensemble and performing PIMC simulations on the…
A sign-blocking method for mitigating the fermion sign problem
Yunuo Xiong, Hongwei Xiong
The fermion sign problem remains the primary obstacle in simulating the thermodynamic properties of various fermionic systems. In this work, we present a sign-blocking method to mi…
Simulation of strongly quantum-degenerate uniform electron gas using the pseudo-fermion method
Yunuo Xiong, Tommaso Morresi, Hongwei Xiong
For strongly quantum-degenerate systems at finite temperatures, the fermion sign problem remains the major obstacle to first-principles simulations. In this work, we apply the rece…
A Pseudo-Fermion Propagator Approach to the Fermion Sign Problem
Yunuo Xiong, Hongwei Xiong
In this work, within the framework of path integral Monte Carlo, we construct a pseudo-fermion propagator by replacing the original fermionic determinant with its absolute value. T…
Study of the uniform electron gas through parametrized partition functions
Tommaso Morresi, Giovanni Garberoglio, Hongwei Xiong +1
We investigate the energy per particle, static structure factor, and momentum distribution of the uniform electron gas for different conditions defined by the dimensionless tempera…
GPU acceleration of ab initio simulations of large-scale identical particles based on path integral molecular dynamics
Yunuo Xiong
Path integral Monte Carlo (PIMC) and path integral molecular dynamics (PIMD) provide the golden standard for the ab initio simulations of identical particles. In this work, we achi…
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…
Robust and Efficient Interference Neural Networks for Defending Against Adversarial Attacks in ImageNet
Yunuo Xiong, Shujuan Liu, Hongwei Xiong
The existence of adversarial images has seriously affected the task of image recognition and practical application of deep learning, it is also a key scientific problem that deep l…
Noise robust neural network architecture
Xiong Yunuo, Xiong Hongwei
In which we propose neural network architecture (dune neural network) for recognizing general noisy image without adding any artificial noise in the training data. By representing…
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…
Path integral molecular dynamics for anyons, bosons and fermions
Xiong Yunuo, Xiong Hongwei
In this article we develop a general method to numerically calculate physical properties for a system of anyons with path integral molecular dynamics. We provide a unified method t…
Path integral molecular dynamics for thermodynamics and Green's function of ultracold spinor bosons
Yu Yongle, Liu Shujuan, Xiong Hongwei +1
Most recently, the path integral molecular dynamics has been successfully used to consider the thermodynamics of single-component identical bosons and fermions. In this work, the p…
On the thermodynamic properties of fictitious identical particles and the application to fermion sign problem
Yunuo Xiong, Hongwei Xiong
By generalizing the recently developed path integral molecular dynamics for identical bosons and fermions, we consider the finite-temperature thermodynamic properties of fictitious…
Numerical calculation of Green's function and momentum distribution for spin-polarized fermions by path integral molecular dynamics
Xiong Yunu, Xiong Hongwei
Most recently, path integral molecular dynamics (PIMD) has been successfully applied to perform simulations of identical bosons and fermions by B. Hirshberg et al.. In this work, w…
Path integral molecular dynamics simulations for Green's function in a system of identical bosons
Xiong Yunuo, Xiong Hongwei
Path integral molecular dynamics (PIMD) has been successfully applied to perform simulations of large bosonic systems in a recent work (Hirshberg et al., PNAS, 116, 21445 (2019)).…
An Analytical Approach to the Universal Wave Function and its Gravitational Effect
Yunuo Xiong, Hongwei Xiong
Based on quantum origin of the universe, in this article we find that the universal wave function can be far richer than the superposition of many classical worlds studied by Evere…