visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-08-18 10:00 
연사  
장소 E6-1 #1323 
1) Date / Time 
    - August 18, 2022 / 10:00 AM (KST)
 
2) Place / ZOOM 
    Room 1323, KAIST Natural Sciences Lecture Hall(E6) (자연과학동 1323호)
 
3) Speaker
    Dr. Kyoung-Min Kim (Center for Theoretical Physics of Complex Systems, IBS)
 
4) Talk Title
    Disorder-driven phase transition in the second-order non-Hermitian skin effect
 
5) Abstract
    The non-Hermitian skin effect exhibits a collapse of extended bulk modes into an extensive number of localized boundary states in the open boundary condition. Here, we demonstrate a disorder-driven phase transition of a trivial non-Hermitian system to the higher-order non-Hermitian skin effect phase. In contrast to clean systems, the disorder-induced boundary modes form an arc in the complex energy plane, which is a manifestation of the disorder-driven energy-dependent phase transition. At the phase transition, localized corner modes and bulk modes characterized by trivial Hamiltonians coexist within a single band, while they remain separated in the complex energy plane. This behavior is analogous to the mobility edge phenomena in disordered Hermitian systems. Using effective medium theory and numerical diagonalizations, we provide a systematic characterization of the disorder-driven phase transition.
번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
374 2022-05-19 16:00    Chasing Long Standing Neutrino Anomalies with MicroBooNE
373 2022-05-19 15:00    (광학분야 특별세미나)Development of a multimodal optical system for improved disease diagnosis
372 2022-05-19 15:00    (광학분야 특별세미나)Development of a multimodal optical system for improved disease diagnosis
371 2022-05-18 16:00    Geometry, Algebra, and Quantum Field Theory
370 2022-05-16 16:00    Design synthetic topological matter with atoms and lights
369 2022-05-13 16:00    High-fidelity iToffoli gate for fixed-frequency superconducting qubits file
368 2022-05-13 14:30    Topological Superconducting Spintronics Towards Zero-Power Computing Technologies file
367 2022-05-12 16:00    New frontiers of electroweak physics at the LHC
366 2022-05-11 16:00    Gravity as a phenomenon in quantum dynamics
365 2022-05-10 16:00    (광학분야 특별세미나)Testing quantum thermodynamics using quantum optics
364 2022-05-09 16:00    Searching for new electronic properties in correlated material flatland
363 2022-05-02 16:00    What can we learn from the history of science and technology?(우리말강의)
362 2022-04-28 16:00    (광학분야 특별세미나)Adiabaticity and symmetry in optical waveguide design
361 2022-04-25 16:00    Ultrafast electron beam, a tool to explore the nanoscopic world of materials(우리말강의)
360 2022-04-15 11:00    (응집물리 세미나) First-principles studies of polar oxides and their applications file
359 2022-04-14 16:00    (광학분야 특별세미나)Holographic tomography of dielectric tensors at optical frequency
358 2022-04-13 10:30    Harnessing topology and correlations from singularities in 3d-kagome metals
357 2022-04-11 16:00    Emergence of Statistical Mechanics in Quantum Systems
356 2022-04-08 11:00    (응집물리 세미나) Flat-surface-assisted physical phenomena occurring in single crystal metal thin film file
355 2022-04-04- 16:00    New paradigms in Quantum Field Theory