visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2023-07-12 11:00 
일시 July 12th(Wed), 11:00AM 
장소 E6-2, #1323 
연사 Prof. Ying-Jer Kao(National Taiwan University) 

물리학과에서는 아래와 같이 세미나를 개최하고자 하오니 관심있는 분들의 많은 참석 부탁드립니다.

 

Date: 11:00 Am, 12th July (Wed)
 
Place: E6, #1323
 
Speaker: Prof. Ying-Jer Kao(National Taiwan University)
 
Title: Study of spin-1/2 antiferromagnetic  kagome Heisenberg model  by symmetric projected entangled simplex states
 
Abstract: 

 

We utilize symmetric projected entangled simplex states (PESS) to classify possible $\mathbb{Z}_2$ spin liquid phases based on  the short-range physics associated with the fractionalization of both the on-site and space-group symmetries. We numerically obtain the optimal $\mathbb{Z}_2$ ground state of the nearest-neighbor spin-1/2 antiferromagnetic Heisenberg model on the kagome lattice.   Using variational simple update and the corner transfer matrix renormalization group, we show the four RVB states converge to different energy levels and the $0$-flux(I) state has the lowest energy. The excitation spectrum, however, indicates  softening of the fermionic excitation, which suggests a possible transition to a closeby $U(1)$ Dirac spin liquid. 

번호 날짜 장소 제목
259 2015-12-03 16:00  E6-2, #1323  Hybrid solid state spin qubits in wide bandgap semiconductors
258 2015-11-24 16:00  E6-2, #1323  Topology-based understanding of spin dynamics in inhomogeneously magnetized systems
257 2015-11-23 13:30  E6-2, #1323  What's Beyond the Standard Model? Lessons from Run I and what might come in Run II
256 2015-11-28 10:00  E6-2, #1323  Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier
255 2015-12-01 16:00  E6-2, #1323  Introducing extra dimensions to spectroscopic studies of advanced quantum materials
254 2015-12-11 13:30  E6-2, #1323  Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9
253 2015-12-11 15:45  E6-2, #1323  Dynamical mean field theory studies on heavy fermion system
252 2016-01-11 16:00  E6-2, #1323  Mott Physics in the Strong Spin-Orbit Coupling Regime
251 2016-01-26 14:00  E6-2, #1323  Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
250 2016-09-29 16:00  E6-2, #1323  2016 Fall, Physics Seminar Serises file
249 2019-06-24 11:00  E6-2, #1323  Topological photonic anomalies file
248 2019-07-25 16:00  E6-2, #1323  Band topology of twisted bilayer graphene file
247 2019-07-31 16:00  E6-2, #1323  Features of ballistic superconducting graphene file
246 2022-09-15 13:00  E6-2, #1323  AdS black holes: a review
» 2023-07-12 11:00  E6-2, #1323  Study of spin-1/2 antiferromagnetic kagome Heisenberg model by symmetric projected entangled simplex states
244 2023-07-11 11:00  E6-2, #1323  Ordered phases, non-Fermi liquid, and quantum criticality driven by entanglement between multipoles and conduction electrons
243 2023-07-19 16:00  E6-2, #1323  [High-Energy Theory Seminar]Deriving the Simplest Gauge-String Duality
242 2023-07-18 11:00  E6-2, #1323  Non-Hermitian Casimir Effect of Magnons
241 2023-12-19 16:00  E6-2, #1323  [High Energy Theory Seminar] Non-invertible symmetries, leptons, quarks, and why multiple generations
240 2024-01-03 11:00  E6-2, #1323  Interplay of Strong Correlations, Topology, and Disorder in 2D Quantum Matters