183 citations · 821 across the 17 of their papers we have counts for
17 papers
Gaussian variational method to Fermi Hubbard model in one and two dimensions
Yue-Ran Shi, Yuan-Yao He, Ruijin Liu +1
The study of ground-state properties of the Fermi-Hubbard model is a long-lasting task in the research of strongly correlated systems. Owing to the exponentially growing complexity…
Precision Many-Body Study of the Berezinskii-Kosterlitz-Thouless Transition and Temperature-Dependent Properties in the Two-Dimensional Fermi Gas
Yuan-Yao He, Hao Shi, Shiwei Zhang
We perform large-scale, numerically exact calculations on the two-dimensional interacting Fermi gas with a contact attraction. Reaching much larger lattice sizes and lower temperat…
Stripes, Antiferromagnetism, and the Pseudogap in the Doped Hubbard Model at Finite Temperature
Alexander Wietek, Yuan-Yao He, Steven R. White +2
The interplay between thermal and quantum fluctuations controls the competition between phases of matter in strongly correlated electron systems. We study finite-temperature proper…
Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model
Thomas Schäfer, Nils Wentzell, Fedor Šimkovic +23
The Hubbard model represents the fundamental model for interacting quantum systems and electronic correlations. Using the two-dimensional half-filled Hubbard model at weak coupling…
Quantitative functional renormalization-group description of the two-dimensional Hubbard model
Cornelia Hille, Fabian B. Kugler, Christian J. Eckhardt +5
Using a leading algorithmic implementation of the functional renormalization group (fRG) for interacting fermions on two-dimensional lattices, we provide a detailed analysis of its…
Combined spontaneous symmetry-breaking and symmetry-protected topological order from cluster charge interaction
Chen Peng, Rong-Qiang He, Yuan-Yao He +1
The study of symmetry-protected topological states in presence of electron correlations has recently aroused great interest as rich and exotic phenomena can emerge. Here, we report…
Reaching the continuum limit in finite-temperature ab initio field-theory computations in many-fermion systems
Yuan-Yao He, Hao Shi, Shiwei Zhang
Finite-temperature, grand-canonical computations based on field theory are widely applied in areas including condensed matter physics, ultracold atomic gas systems, and lattice gau…
Finite-temperature Auxiliary-Field Quantum Monte Carlo: Self-Consistent Constraint and Systematic Approach to Low Temperatures
Yuan-Yao He, Mingpu Qin, Hao Shi +2
We describe an approach for many-body calculations with a finite-temperature, grand canonical ensemble formalism using auxiliary-field quantum Monte Carlo (AFQMC) with a self-consi…
Dynamical Generation of Topological Masses in Dirac Fermions
Yuan-Yao He, Xiao Yan Xu, Kai Sun +3
We report discovery of a topological Mott insulator in strongly-correlated Dirac semimetals. Such an interaction-driven topological state has been theoretically proposed but not ye…
Duality between the deconfined quantum-critical point and the bosonic topological transition
Yan Qi Qin, Yuan-Yao He, Yi-Zhuang You +5
Recently significant progress has been made in -dimensional conformal field theories without supersymmetry. In particular, it was realized that different Lagrangians may be…
Visualizing a Bosonic Symmetry Protected Topological Phase in an Interacting Fermion Model
Han-Qing Wu, Yuan-Yao He, Yi-Zhuang You +5
Symmetry protected topological (SPT) phases in free fermion and interacting bosonic systems have been classified, but the physical phenomena of interacting fermionic SPT phases hav…
Quantum critical point of Dirac fermion mass generation without spontaneous symmetry breaking
Yuan-Yao He, Han-Qing Wu, Yi-Zhuang You +3
We study a lattice model of interacting Dirac fermions in dimension space-time with an SU(4) symmetry. While increasing interaction strength, this model undergoes a {\it co…
Diagnosis of interaction-driven topological phase via exact diagonalization
Han-Qing Wu, Yuan-Yao He, Chen Fang +2
We propose a general scheme for diagnosing interaction-driven topological phases in the weak interaction regime using exact diagonalization (ED). The scheme comprises the analysis…
Topological invariants for interacting topological insulators: II. Breakdown of the Green's function formalism
Yuan-Yao He, Han-Qing Wu, Zi Yang Meng +1
Topological phase transitions in free fermion systems can be characterized by closing of single-particle gap and change in topological invariants. However, in the presence of elect…
Topological invariants for interacting topological insulators: I. Efficient numerical evaluation scheme and implementations
Yuan-Yao He, Han-Qing Wu, Zi Yang Meng +1
The aim of this series of two papers is to discuss topological invariants for interacting topological insulators (TIs). In the first paper (I), we provide a paradigm of efficient n…
Bona fide interaction-driven topological phase transition in correlated SPT states
Yuan-Yao He, Han-Qing Wu, Yi-Zhuang You +3
It is expected that the interplay between non-trivial band topology and strong electron correlation will lead to very rich physics. Thus a controlled study of the competition betwe…
Quantum Monte Carlo study of strange correlator in interacting topological insulators
Han-Qing Wu, Yuan-Yao He, Yi-Zhuang You +3
Distinguishing the nontrivial symmetry-protected topological (SPT) phase from the trivial insulator phase in the presence of electron-electron interaction is an urgent question to…