90 citations · 258 across the 15 of their papers we have counts for
15 papers
Dissipation-induced bulk and boundary criticality in the Haldane chain
Zhenjiu Wang, Manuel Weber
We study the Haldane chain coupled to a dissipative ohmic bath. Using large-scale quantum Monte Carlo simulations, we identify a second-order quantum phase transition into an antif…
Edge modes of topological Mott insulators and deconfined quantum critical points
Yuhai Liu, Toshihiro Sato, Disha Hou +3
Topology and anomalies lead to edge modes that can interact with critical bulk fluctuations. To study this setup, pertaining to boundary criticality, we consider a model exhibiting…
Alteration of Topology in Quantum Phase Transitions via Symmetry Enrichment
Gabriel Rein, Marcin Raczkowski, Zhenjiu Wang +2
Topology plays a cardinal role in explaining phases and quantum phase transitions beyond the Landau-Ginzburg-Wilson paradigm. In this study, we formulate a set of models of Dirac f…
The renormalized classical spin liquid on the ruby lattice
Zhenjiu Wang, Lode Pollet
The recent experimental detection of the onset of a dynamically prepared, gapped quantum spin liquid on the ruby lattice brought the physics of frustrated magnetism and latti…
Effective model for superconductivity in magic-angle graphene
Disha Hou, Yuhai Liu, Toshihiro Sato +3
We carry out large-scale quantum Monte Carlo simulations of a candidate field theory for the onset of superconductivity in magic-angle twisted bilayer graphene. The correlated insu…
Simulation of Fermionic and Bosonic Critical Points with Emergent SO(5) Symmetry
Toshihiro Sato, Zhenjiu Wang, Yuhai Liu +4
We introduce a model of Dirac fermions in 2+1 dimensions with a semimetallic, a quantum spin-Hall insulating (QSHI), and an s-wave superconducting (SSC) phase. The phase diagram fe…
Validity of SLAC fermions for the (1 + 1)-dimensional helical Luttinger liquid
Zhenjiu Wang, Fakher Assaad, Maksim Ulybyshev
The Nielson-Ninomiya theorem states that a chirally invariant free fermion lattice action, which is local, translation invariant, and real necessarily has fermion doubling. The SLA…
Bandwidth controlled quantum phase transition between an easy-plane quantum spin Hall state and an s-wave superconductor
Disha Hou, Yuhai Liu, Toshihiro Sato +3
The quantum spin Hall state can be understood in terms of spontaneous O(3) symmetry breaking. Topological skyrmion configurations of the O(3) order parameter vector carry a charge…
Quantum Monte Carlo at the Graphene Quantum Hall Edge
Zhenjiu Wang, David J. Luitz, Inti Sodemann Villadiego
We study a continuum model of the interface of graphene and vacuum in the quantum hall regime via sign-problem-free quantum Monte Carlo, allowing us to investigate the interplay of…
Thermodynamic and Dynamical Signatures of a Quantum Spin-Hall Insulator to Superconductor Transition
Martin Hohenadler, Yuhai Liu, Toshihiro Sato +3
Thermodynamic and dynamical properties of a model of Dirac fermions with a deconfined quantum critical point (DQCP) separating an interaction-generated quantum spin-Hall insulator…
Gross-Neveu Heisenberg criticality: dynamical generation of quantum spin Hall masses
Yuhai Liu, Zhenjiu Wang, Toshihiro Sato +2
We consider fermions on a honeycomb lattice supplemented by a spin invariant interaction that dynamically generates a quantum spin Hall insulator. This lattice model provides an in…
Doping-induced quantum spin Hall insulator to superconductor transition
Zhenjiu Wang, Yuhai Liu, Toshihiro Sato +4
A unique property of a dynamically generated quantum spin Hall state are Goldstone modes that correspond to the long-wavelength fluctuations of the spin-orbit coupling order parame…
Phases of the (2+1) dimensional SO(5) non-linear sigma model with topological term
Zhenjiu Wang, Michael P. Zaletel, Roger S. K. Mong +1
We use the half-filled zeroth Landau level in graphene as a regularization scheme to study the physics of the SO(5) non-linear sigma model subject to a Wess-Zumino-Witten topologic…
Superconductivity from the Condensation of Topological Defects in a Quantum Spin-Hall Insulator
Yuhai Liu, Zhenjiu Wang, Toshihiro Sato +4
The discovery that spin-orbit coupling can generate a new state of matter in the form of quantum spin-Hall (QSH) insulators has brought topology to the forefront of condensed matte…
Finite-size effects in canonical and grand-canonical quantum Monte Carlo simulations for fermions
Zhenjiu Wang, Fakher F. Assaad, Francesco Parisen Toldin
We introduce a quantum Monte Carlo method at finite temperature for interacting fermionic models in the canonical ensemble, where the conservation of the particle number is enforce…