33 citations · 296 across the 25 of their papers we have counts for
26 papers
Dynamically observing the spectra of quantum droplets in optical lattice
Yuhang Nie, Jun-Hui Zheng, Tao Yang
Optical lattice plays an important role on stability and dynamics of quantum droplets. In this letter, we investigate the Bogoliubov excitation spectrum of quantum droplets in opti…
Finiteness of Entanglement Entropy in Collective Field Theory
Sumit R. Das, Antal Jevicki, Junjie Zheng
We explore the question of finiteness of the entanglement entropy in gravitational theories whose emergent space is the target space of a holographic dual. In the well studied dual…
Gravity-induced accelerating expansion of excited-state Bose-Einstein condensate
Lijia Jiang, Jun-Hui Zheng
The Bose-Einstein condensate (BEC) of excited states, provides a different platform to explore the interplay between gravity and quantum physics. In this Letter, we study the respo…
Quench dynamics of Bose-Einstein condensates in boxlike traps
Rong Du, Jian-Chong Xing, Bo Xiong +2
We investigate the nonequilibrium dynamics of two-dimensional Bose-Einstein condensates in boxlike traps with power-law potential boundaries by quenching the interatomic interactio…
Dynamical Symmetry and the Thermofield State at Large
Antal Jevicki, Xianlong Liu, Junggi Yoon +1
We discus Thermofield Double QFT at real time, in the large limit. First, we establish a (dynamical) symmetry which we argue holds in general on the real time portion of the Sc…
Controlling the RKKY interaction and heat transport in a Kitaev spin liquid via flux walls
Jun-Hui Zheng, Arne Brataas
Kitaev spin liquids (KSLs) contain both itinerant Majorana fermions and localized flux excitations. The mobile fermions transport energy, while the fluxes hinder heat flow. B…
Nonuniform-temperature effects on the phase transition in an Ising-like model
Jun-Hui Zheng, Lijia Jiang
In this study, we investigate the spatially nonuniform-temperature effects on the QCD chiral phase transition in the heavy-ion collisions. Since the QCD effective theory and the Is…
Topological Mott transition in a Weyl-Hubbard model with dynamical mean-field theory
Bernhard Irsigler, Tobias Grass, Jun-Hui Zheng +2
Weyl semimetals are three-dimensional, topologically protected, gapless phases which show exotic phenomena such as Fermi arc surface states or negative magnetoresistance. It is an…
Theory of Domain-Wall Magnetoresistance in Metallic Antiferromagnets
Jun-Hui Zheng, Arne Brataas, Mathias Kläui +1
We develop a theory to compute the domain-wall magnetoresistance (DWMR) in antiferromagnetic (AFM) metals with different spin structures. In the diffusive transport regime, the DWM…
Interaction-driven topological phase transitions in fermionic SU() systems
Mohsen Hafez-Torbati, Jun-Hui Zheng, Bernhard Irsigler +1
We consider SU() fermions on the triangular lattice in the presence of a gauge potential which stabilizes a quantum Hall insulator (QHI) at the density of one particle per latti…
Z2 characterization for three-dimensional multiband Hubbard models
Bernhard Irsigler, Jun-Hui Zheng, Fabian Grusdt +1
We introduce three numerical methods for characterizing the topological phases of three-dimensional multiband Hubbard models based on twisted boundary conditions, Wilson loops, as…
Bulk topological proximity effect in multilayer systems
Jaromir Panas, Bernhard Irsigler, Jun-Hui Zheng +1
We investigate the bulk topological proximity effect in multilayer hexagonal lattice systems by which one can introduce topological properties into a system composed of multiple tr…
Microscopic characteristics and tomography scheme of the local Chern marker
Bernhard Irsigler, Jun-Hui Zheng, Walter Hofstetter
The concept of the local Chern marker has gained a lot of attention especially in the field of ultracold quantum gases in optical lattices and artificial gauge fields. We investiga…
Measuring the topological phase transition via the single-particle density matrix
Jun-Hui Zheng, Bernhard Irsigler, Lijia Jiang +2
We discuss the topological phase transition of the spin- fermionic Haldane model with repulsive on-site interaction. We show that the Berry curvature of the topologica…
Entanglement and chaos in warped conformal field theories
Luis Apolo, Song He, Wei Song +2
Various aspects of warped conformal field theories (WCFTs) are studied including entanglement entropy on excited states, the Renyi entropy after a local quench, and out-of-time-ord…
Spin-imbalance-induced transverse magnetization in the Hofstadter-Hubbard model
Bernhard Irsigler, Jun-Hui Zheng, Mohsen Hafez-Torbati +1
The fermionic, time-reversal invariant Hofstadter-Hubbard model with a population difference between the two spin states is investigated. In the strongly interacting regime, where…
Interacting Hofstadter Interface
Bernhard Irsigler, Jun-Hui Zheng, Walter Hofstetter
Two-dimensional topological insulators possess conducting edge states at their boundary while being insulating in the bulk. The detection of edge states remains an open question in…
Interaction-enhanced integer quantum Hall effect in disordered systems
Jun-Hui Zheng, Tao Qin, Walter Hofstetter
We study transport properties and topological phase transition in two-dimensional interacting disordered systems. Within dynamical mean-field theory, we derive the Hall conductance…
Topological invariant for two-dimensional open systems
Jun-Hui Zheng, Walter Hofstetter
We study the topology of two-dimensional open systems in terms of the Green's function. The Ishikawa-Matsuyama formula for the integer topological invariant is applied in open syst…
Nontrivial interplay of strong disorder and interactions in quantum spin-Hall insulators doped with dilute magnetic impurities
Jun-Hui Zheng, Miguel A. Cazalilla
We investigate nonperturbatively the effect of a magnetic dopant impurity on the edge transport of a quantum spin Hall (QSH) insulator. We show that for a strongly coupled magnetic…
Spin-orbit-coupling-induced magnetic heterostructure in the bilayer Bose-Hubbard system
Bo Xiong, Jun-hui Zheng, Yu-Ju Lin +1
We investigate magnetic phase in the bilayer system of ultra-cold bosons in an optical lattice, which is involved with Raman-induced spin-orbit (SO) coupling and laser-assisted int…
Superfluidity enhanced by spin-flip tunnelling in the presence of a magnetic field
Jun-Hui Zheng, Daw-Wei Wang, Gediminas Juzeliunas
It is well-known that when the magnetic field is stronger than a critical value, the spin imbalance can break the Cooper pairs of electrons and hence hinder the superconductivity i…
Topological Condensate in an Interaction Induced Gauge Potential
Jun-hui Zheng, Bo Xiong, G. Juzeliunas +1
We systematically investigate the ground state and elementary excitations of a Bose-Einstein Condensate with a synthetic vector potential, which is induced by the many-body effects…
Nonadiabatic multichannel dynamics of a spin-orbit coupled condensate
Bo Xiong, Jun-hui Zheng, Daw-wei Wang
We investigate the nonadiabatic dynamics of a driven spin-orbit-coupled Bose-Einstein condensate in both weak and strong driven force. It is shown that the standard Landau-Zener (L…