8 papers
Cuprate d-wave superconductivity based on Non perturbative many body theory for spin fluctuation
Jianwei Gong, Junnian Xiong, Ruitao Xiao +4
We employ the nonperturbative many-body spin GW method to compute the single-particle Green's function, and the covariance method to evaluate the correlation functions of two body,…
Nonpertubative Many-Body Theory for the Two-Dimensional Hubbard Model at Low Temperature: From Weak to Strong Coupling Regimes
Ruitao Xiao, Yingze Su, Junnian Xiong +3
In theoretical studies of two-dimensional (2D) systems, the Mermin-Wagner theorem prevents continuous symmetry breaking at any finite temperature, thus forbidding a Landau phase tr…
Benchmarking Non-perturbative Many-Body Approaches in the Exactly Solvable Hatsugai-Kohmoto Model
Hui Li, Ziyu Li, Chen-run Yu
The accurate simulation of strongly correlated electron systems remains a central challenge in condensed matter physics, motivating the development of various non-perturbative many…
Emergent Composite Particles from the Universal Exact Identities in Quantum Many-Body Systems with Generic Bilinear Interactions
Hui Li
A fundamental challenge in quantum many-body physics is to understand the universal properties of strongly correlated systems. In this work, we establish a universal and exact iden…
Quantum Quench Dynamics in an Exactly Solvable Two-Dimensional Non-Fermi Liquid System
Hui Li, Run-Yu Chen, Wen-Yuan Liu +2
Understanding the behavior of non-Fermi liquids (NFLs) is an important topic in condensed matter physics. Here we introduce an exactly solvable multi-orbital model based on iron ox…
Experimental demonstration of generalized quantum fluctuation theorems in the presence of coherence
Hui Li, Jie Xie, Hyukjoon Kwon +3
Fluctuation theorems have elevated the second law of thermodynamics to a statistical realm by establishing a connection between time-forward and time-reversal probabilities, provid…