152 citations · 626 across the 21 of their papers we have counts for
14 papers · 1 filter
Hubbard Model on Triangular Lattice: Role of Charge Fluctuations
Ji-Si Xu, Zheng Zhu, Kai Wu +1
A chiral spin liquid (CSL) phase has been recently reported in the Hubbard model on a triangular lattice at half-filling. It emerges in an intermediate coupling regime, which is sa…
Proximate deconfined quantum critical point in SrCu2(BO3)2
Yi Cui, Lu Liu, Huihang Lin +10
The deconfined quantum critical point (DQCP) represents a paradigm shift in quantum matter studies, presenting a "beyond Landau" scenario for order--order transitions. Its experime…
Z2 topological order and first-order quantum phase transitions in systems with combinatorial gauge symmetry
Kai-Hsin Wu, Zhi-Cheng Yang, Dmitry Green +2
We study a generalization of the two-dimensional transverse-field Ising model, combining both ferromagnetic and antiferromagnetic two-body interactions, that hosts exact global and…
Entanglement Renyi negativity across a finite temperature transition: a Monte Carlo study
Kai-Hsin Wu, Tsung-Cheng Lu, Chia-Min Chung +2
Quantum entanglement is fragile to thermal fluctuations, which raises the question whether finite temperature phase transitions support long-range entanglement similar to their zer…
Tunneling-induced restoration of classical degeneracy in quantum kagome ice
Kai-Hsin Wu, Yi-Ping Huang, Ying-Jer Kao
Quantum effect is expected to dictate the behaviour of physical systems at low temperature. For quantum magnets with geometrical frustration, quantum fluctuation usually lifts the…
Dual gauge field theory of quantum liquid crystals in three dimensions
Aron J. Beekman, Jaakko Nissinen, Kai Wu +1
The dislocation-mediated quantum melting of solids into quantum liquid crystals is extended from two to three spatial dimensions, using a generalization of boson-vortex or Abelian-…
Dual gauge field theory of quantum liquid crystals in two dimensions
Aron J. Beekman, Jaakko Nissinen, Kai Wu +5
We present a self-contained review of the theory of dislocation-mediated quantum melting at zero temperature in two spatial dimensions. The theory describes the liquid-crystalline…
Origin of Strong Dispersion in Hubbard Insulators
Yao Wang, Krzysztof Wohlfeld, Brian Moritz +5
Using cluster perturbation theory, we explain the origin of the strongly dispersive feature found at high binding energy in the spectral function of the Hubbard model. By comparing…
Classification of nematic order in 2+1D: Dislocation melting and lattice gauge theory
Ke Liu, Jaakko Nissinen, Zohar Nussinov +3
Nematic phases, breaking spontaneously rotational symmetry, provide for ubiquitously observed states of matter in both classical and quantum systems. These nematic states may be fu…
Deconfining the rotational Goldstone mode: the superconducting nematic liquid crystal in 2+1D
Aron J. Beekman, Kai Wu, Vladimir Cvetkovic +1
The Goldstone theorem states that there should be a massless mode for each spontaneously broken symmetry generator. There is no such rotational mode in crystals, however supercondu…
Dynamics of a single exciton in strongly correlated bilayers
Louk Rademaker, Kai Wu, Jan Zaanen
We formulated an effective theory for a single interlayer exciton in a bilayer quantum antiferromagnet, in the limit that the holon and doublon are strongly bound onto one interlay…
The dynamical frustration of interlayer excitons delocalizing in bilayer quantum antiferromagnets
Louk Rademaker, Kai Wu, Hans Hilgenkamp +1
Using the self-consistent Born approximation we study the delocalization of interlayer excitons in the bilayer Heisenberg quantum antiferromagnet. Under realistic conditions we fin…
Statistical fluxes and the Curie-Weiss metal state
Kai Wu, Zheng-Yu Weng, Jan Zaanen
We predict a new state of matter in the triangular t-J model in a high doping regime. Due to the altered role of quantum statistics the spins are `localized' in statistical Landau…
Quantum Antiferromagnetism of Fermions in Optical Lattices with Half-filled p-band
Kai Wu, Hui Zhai
We study Fermi gases in a three-dimensional optical lattice with five fermions per site, i.e. the s-band is completely filled and the p-band with three-fold degeneracy is half fill…