5 papers
Detecting quantum phase transitions via shallow variational quantum circuits
Ching-Yu Huang, Min-Fong Yang
Mapping quantum phase diagrams through classical simulation is notoriously resource-intensive, as even small systems far from the thermodynamic limit demand prohibitive computation…
Reevaluating Quantum Geometric Criteria for Itinerant Magnetic Instabilities
Min-Fong Yang
The interplay between quantum geometry and electron correlation has emerged as a compelling paradigm in quantum many-body physics. Recent studies have highlighted the diagnostic ut…
Mitigating the sign problem by quantum computing
Kwai-Kong Ng, Min-Fong Yang
The notorious sign problem severely limits the applicability of quantum Monte Carlo (QMC) simulations, as statistical errors grow exponentially with system size and inverse tempera…
Work statistics and thermal phase transitions
Kwai-Kong Ng, Min-Fong Yang
The investigation of nonequilibrium thermodynamics in quantum many-body systems underscores the importance of quantum work, which differs from its classical counterpart due to its…
Influence of flat bands on RKKY interaction: perspective of Fano defects
Yue-De Luo, Min-Fong Yang
In this paper, we revisit the effect of flat bands on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction by using a coordinate transformation that detangles flat-band states from…