A5056046455- Black Holes and Theoretical Physics
- Topological Materials and Phenomena
- Cosmology and Gravitation Theories
- Cold Atom Physics and Bose-Einstein Condensates
- Graphene research and applications
- Advanced Condensed Matter Physics
- Noncommutative and Quantum Gravity Theories
- Particle physics theoretical and experimental studies
- Physics of Superconductivity and Magnetism
- High-Energy Particle Collisions Research
- Magnetic and transport properties of perovskites and related materials
- Quantum Chromodynamics and Particle Interactions
- 2D Materials and Applications
- Strong Light-Matter Interactions
- Nonlinear Photonic Systems
- Nonlinear Waves and Solitons
- Quantum many-body systems
- Electronic and Structural Properties of Oxides
- Solid State Laser Technologies
- Quantum, superfluid, helium dynamics
- Advanced Fiber Laser Technologies
- Neutrino Physics Research
- Advanced Thermodynamics and Statistical Mechanics
- Quantum and electron transport phenomena
- Radiation Detection and Scintillator Technologies
Ascendis Pharma (Denmark)
2025
Beihang University
2013-2024
Chinese University of Hong Kong
2024
Liaocheng University
2024
Chongqing University
2023-2024
Hangzhou Institute of Applied Acoustics
2024
Chinese Academy of Medical Sciences & Peking Union Medical College
2014-2023
Peking Union Medical College Hospital
2014-2023
Xiamen University
2021-2023
Xuzhou University of Technology
2023
The three-dimensional topological semimetals represent a new quantum state of matter. Distinct from the surface in insulators that exhibits linear dispersion two-dimensional momentum plane, host bulk band dispersions linearly along all directions. In addition to gapless points bulk, Weyl/Dirac are also characterized by "topologically protected" with Fermi arcs on their surface. While Cd3As2 is proposed be viable candidate Dirac semimetal, more investigations necessary pin down its nature....
The Dirac materials, such as graphene and three-dimensional topological insulators, have attracted much attention because they exhibit novel quantum phenomena with their low energy electrons governed by the relativistic equations. One particular interest is to generate cone anisotropy so that can propagate differently from one direction other, creating an additional tunability for new properties applications. While various theoretical approaches been proposed make isotropic cones of into...
Three-dimensional topological insulators are characterized by insulating bulk state and metallic surface involving relativistic Dirac fermions which responsible for exotic quantum phenomena potential applications in spintronics computations. It is essential to understand how the interact with other electrons, phonons disorders. Here we report super-high resolution angle-resolved photoemission studies on fermion dynamics prototypical Bi2(Te,Se)3 insulators. We have directly revealed...
We study two-dimensional (2D) matter-wave solitons in spinor Bose-Einstein condensates (BECs) under the action of spin-orbit coupling (SOC) and opposite signs self- cross-interactions. Stable 2D two-component mixed-mode (MM) type are found if cross-interaction between components is attractive, while self-interaction repulsive each component. semi-vortex formed case, competing self-attraction cross-repulsion. The exist with total norm taking values below a collapse threshold. Further, case...
High-resolution angle-resolved photoemission measurements are carried out on transition metal dichalcogenide PdTe2 that is a superconductor with Tc at 1.7 K. Combined theoretical calculations, we discover for the first time existence of topologically nontrivial surface state Dirac cone in PbTe2 superconductor. It located Brillouin zone center and possesses helical spin texture. Distinct from usual three-dimensional topological insulators where lies Fermi level, point deeply below level ∼1.75...
We present a holographic model of Weyl semi-metal. show the evidences that upon varying mass parameter undergoes sharp crossover at small temperature from topologically non-trivial state to trivial one. The order is anomalous Hall effect (AHE) and we find it very strongly suppressed above critical value parameter. This can be taken as hint for an underlying topological quantum phase transition. give interpretation results in terms RG flow compare weakly coupled field theoretical model. Since...
We present a holographic model of topological Weyl semimetal. A key ingredient is time-reversal breaking parameter and mass deformation. Upon varying the ratio to undergoes quantum phase transition from topologically nontrivial semimetal trivial one. The characterized by presence an anomalous Hall effect. results can be interpreted in terms renormalization group (RG) flow leading restoration time reversal at end point RG phase.
A bstract We study quantum chaos of rotating BTZ black holes in Topologically Massive gravity (TMG). discuss the relationship between parameters including Lyapunov exponents and butterfly velocities from shock wave calculations out-of-time-order correlators (OTOC) pole-skipping analysis. find a partial match OTOC results high temperature regime. also that velocity bound puts constraint on gravitational Chern-Simons coupling.
A bstract We construct hairy rotating black hole solutions in three dimensional Einstein gravity coupled to a complex scalar field. When we turn on real and uniform source the dual CFT, is stationary with two Killing vectors show that there no inner horizon for system evolves smoothly into Kasner universe. periodic driving CFT phase velocity equal angular of hole, have time-dependent only one vector. inside after rapid collapse Einstein-Rosen bridge, oscillations field follow. Then epoch...
A bstract We study the black hole interiors in holographic Weyl semimetals and nodal line semimetals. find that singularities are of Kasner form. In topologically nontrivial phase at low temperature, both exponents metric fields proper time from horizon to singularity almost constant, likely reflecting topological nature also some specific behaviors inside each semimetal model.
Topological semimetals are a class of many-body systems exhibiting novel macroscopic quantum phenomena at the interplay between high energy and condensed matter physics. They display topological phase transition (TQPT) which evades standard Landau paradigm. In case Weyl semimetals, anomalous Hall effect is good non-local order parameter for TQPT, as it proportional to separation nodes in momentum space. On contrary, nodal line (NLSM), quest an still open. By taking advantage recently...
In this note we investigate the generalized massive gravity in asymptotically ${\mathrm{AdS}}_{3}$ spacetime by combining two mass terms of topological and new theory. We study linearized excitations around background find that at a specific value certain combination parameters (chiral line), one graviton solutions becomes left-moving massless mode. It is shown theory chiral line under Brown-Henneaux boundary condition. Because degeneration gravitons log solution which has logarithmic...
Despite intense efforts during the last 25 years, physics of unconventional superconductors, including cuprates with a very high transition temperature, is still controversial subject. It believed that superconductivity in many these strongly correlated metallic systems originates quantum phase transitions, but quite diverse perspectives have emerged on fundamentals electron-pairing physics, ranging from Hertz style critical spin fluctuation glue to holographic string theory. Here we...
In four dimensions Weyl fermions possess a chiral anomaly which leads to several special features in the transport phenomena, such as negative longitudinal magnetoresistivity. this paper, we study its inverse, magnetoconductivity, case of anomalous system with background magnetic field B using linear response method hydrodynamic limit and from holography. Our results show that general need have energy, momentum charge dissipations get finite DC magnetoconductivity due existence anomaly....