548 citations · 2.3k across the 24 of their papers we have counts for
23 papers
Classification of symmetry-enriched topological quantum spin liquids
Weicheng Ye, Liujun Zou
We present a systematic framework to classify symmetry-enriched topological quantum spin liquids in two spatial dimensions. This framework can deal with all topological quantum spi…
Anomaly of -Dimensional Symmetry-Enriched Topological Order from -Dimensional Topological Quantum Field Theory
Weicheng Ye, Liujun Zou
Symmetry acting on a (2+1) topological order can be anomalous in the sense that they possess an obstruction to being realized as a purely (2+1) on-site symmetry. In this pape…
Entanglement-enabled symmetry-breaking orders
Cheng-Ju Lin, Liujun Zou
A spontaneous symmetry-breaking order is conventionally described by a tensor-product wave-function of some few-body clusters. We discuss a type of symmetry-breaking orders, dubbed…
Renormalization-group Perspective on Gravitational Critical Collapse
Huan Yang, Liujun Zou
In this work, we propose extremal black holes (BH) as critical points of a new class of gravitational collapses. The conjecture is made by observing the Continuous Self Similarity…
Topological characterization of Lieb-Schultz-Mattis constraints and applications to symmetry-enriched quantum criticality
Weicheng Ye, Meng Guo, Yin-Chen He +2
Lieb-Schultz-Mattis (LSM) theorems provide powerful constraints on the emergibility problem, i.e. whether a quantum phase or phase transition can emerge in a many-body system. We d…
Edge physics at the deconfined transition between a quantum spin Hall insulator and a superconductor
Ruochen Ma, Liujun Zou, Chong Wang
We study the edge physics of the deconfined quantum phase transition (DQCP) between a spontaneous quantum spin Hall (QSH) insulator and a spin-singlet superconductor (SC). Although…
Ultraviolet-Infrared Mixing in Marginal Fermi Liquids
Weicheng Ye, Sung-Sik Lee, Liujun Zou
When Fermi surfaces (FSs) are subject to long-range interactions that are marginal in the renormalization-group sense, Landau Fermi liquids are destroyed, but only barely. With the…
Reaction-diffusion dynamics in a Fibonacci chain: Interplay between classical and quantum behavior
Cheng-Ju Lin, Liujun Zou
We study the reaction-diffusion dynamics of Fibonacci anyons in a one dimensional lattice. Due to their non-Abelian nature, besides the position degree of freedom (DOF), these anyo…
Stiefel Liquids: Possible Non-Lagrangian Quantum Criticality from Intertwined Orders
Liujun Zou, Yin-Chen He, Chong Wang
We propose a new type of quantum liquids, dubbed Stiefel liquids, based on dimensional nonlinear sigma models on target space , supplemented with Wess-Zumino-Wit…
Deconfined Metal-Insulator Transitions in Quantum Hall Bilayers
Liujun Zou, Debanjan Chowdhury
We propose that quantum Hall bilayers in the presence of a periodic potential at the scale of the magnetic length can host examples of a Deconfined Metal-Insulator Transition (DMIT…
Deconfined metallic quantum criticality: A gauge-theoretic approach
Liujun Zou, Debanjan Chowdhury
We discuss a new class of quantum phase transitions -- Deconfined Mott Transition (DMT) -- that describe a continuous transition between a Fermi liquid metal with a generic electro…
Hamiltonian Tomography via Quantum Quench
Zhi Li, Liujun Zou, Timothy H. Hsieh
We show that it is possible to uniquely reconstruct a generic many-body local Hamiltonian from a single pair of initial and final states related by time evolution with the Hamilton…
Fractionalization and Anomalies in Symmetry-Enriched U(1) Gauge Theories
Shang-Qiang Ning, Liujun Zou, Meng Cheng
We classify symmetry fractionalization and anomalies in a (3+1)d U(1) gauge theory enriched by a global symmetry group . We find that, in general, a symmetry-enrichment pattern…
Field-induced QCD-Chern-Simons quantum criticalities in Kitaev materials
Liujun Zou, Yin-Chen He
Kitaev materials are promising for realizing exotic quantum spin liquid phases, such as a non-Abelian chiral spin liquid. Motivated by recent experiments in these materials, we the…
Faithful Tight-binding Models and Fragile Topology of Magic-angle Bilayer Graphene
Hoi Chun Po, Liujun Zou, T. Senthil +1
Correlated insulators and superconductivity have been observed in "magic-angle" twisted bilayer graphene, when the nearly flat bands close to neutrality are partially filled. While…
Band Structure of Twisted Bilayer Graphene: Emergent Symmetries, Commensurate Approximants and Wannier Obstructions
Liujun Zou, Hoi Chun Po, Ashvin Vishwanath +1
A remarkable feature of the band structure of bilayer graphene at small twist angle is the appearance of isolated bands near neutrality, whose bandwidth can be reduced at certain m…
Origin of Mott insulating behavior and superconductivity in twisted bilayer graphene
Hoi Chun Po, Liujun Zou, Ashvin Vishwanath +1
A remarkable recent experiment has observed Mott insulator and proximate superconductor phases in twisted bilayer graphene when electrons partly fill a nearly flat mini-band that a…
Bulk characterization of topological crystalline insulators: stability under interactions and relations to symmetry enriched U(1) quantum spin liquids
Liujun Zou
Topological crystalline insulators (TCIs) are nontrivial quantum phases of matter protected by crystalline (and other) symmetries. They are originally predicted by band theories, s…
Symmetry enriched U(1) quantum spin liquids
Liujun Zou, Chong Wang, T. Senthil
We classify and characterize three dimensional quantum spin liquids (deconfined gauge theories) with global symmetries. These spin liquids have an emergent gapless ph…
Theory of anomalous magnetotransport from mass anisotropy
Liujun Zou, Samuel Lederer, T. Senthil
In underdoped YBaCuO, there is evidence of a small Fermi surface pocket subject to substantial mass enhancement in the doping regime . This mass enhan…
Spurious Long-range Entanglement and Replica Correlation Length
Liujun Zou, Jeongwan Haah
Topological entanglement entropy has been regarded as a smoking-gun signature of topological order in two dimensions, capturing the total quantum dimension of the topological parti…
Dimensional decoupling at continuous quantum critical Mott transitions
Liujun Zou, T. Senthil
For continuous Mott metal-insulator transitions in layered two dimensional systems, we demonstrate the phenomenon of dimensional decoupling: the system behaves as a three-dimension…
Implementation of the Dicke lattice model in hybrid quantum system arrays
Liujun Zou, David Marcos, Sebastian Diehl +4
Generalized Dicke models can be implemented in hybrid quantum systems built from ensembles of nitrogen-vacancy (NV) centers in diamond coupled to superconducting microwave cavities…