visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Weiss fields for Quantum Spin Dynamics

2022.03.28 16:20

admin 조회 수:3955

날짜 2022-03-31 10:00 
연사  
장소 E6 #1501/zoom 
Title: Weiss fields for Quantum Spin Dynamics
presenter Dr. Samuel Begg (APCTP) 
Date: 10AM, 31th Mar. E6 #1501/zoom
       

https://us02web.zoom.us/j/86848081459?pwd=ai8rWSt2ZWxFeDNtZ09PVFgzNU1jZz09

회의 ID: 868 4808 1459

암호: 076668

 
abstract

Simulating non-equilibrium quantum spin dynamics beyond one-dimension remains a significant challenge, despite advances in computational methods over the last two decades. We tackle this issue using a Monte Carlo method in which the time-evolution of  quantum observables is encoded by averages over a classical stochastic process. An intuitive approach is to sample around a "well-chosen" mean-field spin configuration. This works only for relatively short timescales, with entanglement growth generically requiring that these mean-fields decay over time. New insights are therefore required to reach later times. We demonstrate that in our stochastic representation one may encode mean-field contributions for every trajectory individually. This improves the efficiency of Monte Carlo sampling exponentially for quenches of the quantum Ising model in 2D and 3D. Connections to gauge freedom in phase space representations of quantum problems are also discussed, with emphasis placed on current and future research directions

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)
575 2025-01-23 14:00  여영기 박사  Complete Polytype switching by super lubricant van der Waals cavity arrays file
574 2025-01-08 16:00  Dr. SangEun Han  Quantum impurity model for two-stage multipolar ordering and Fermi surface reconstruction
573 2024-12-17 15:00  Isaac H. Kim  Learning state preparation circuit for quantum phases of matter (Isaac H. Kim, UC Davis)
572 2024-12-06 16:00  Vladimir Y. Chernyak  Bright Squeezed Light (BSL) Spectroscopy with Interferometry from First Principles
571 2024-11-30 10:30  Joon Young Park  Towards probing topological phases in Corbino-geometry Josephson junctions on a topological insulator surface
570 2024-11-21 16:00  Prof. Ulrich Höfer  Time-resolved photoemission: From bandstructure to orbital movies file
569 2024-11-21 11:00  Daniel L. Jafferis  3d Gravity and Tensor Model file
568 2024-11-18 10:30    Manipulation of antiferromagnetic magnon polarization in synthetic antiferromagnets
567 2024-11-13 12:00    [11/13(수) 물리학과 세미나 안내] Separability as a window to mixed-state quantum phases and phase transitions / Tarun Grover (UC San Diego, Associate Professor)
566 2024-10-31 13:00    Mini-workshop on first-principles DFT methods and applications
565 2024-10-30 14:30    [Seminar Invitation] Mario Cuoco (CNR-SPIN, c/o University of Salerno, Fisciano, Italy) / 2024.10.30. 14:30 / E6-2, #3441
564 2024-10-21 13:00    [Physics Seminar] “Non-Hermitian Point-Gap Topology in Junction Systems” file
563 2024-10-17 16:00    Photonic Methods for Quantum Levitodynamics Beyond the Rayleigh Regime
562 2024-10-14 11:00    [RSVP, Oct 14th Mon] Ambassador of Hungary to Republic of Korea Special Lecture file
561 2024-10-02 12:00    Data-driven discovery of neural computations through brain-wide and cell-type-specific dynamical systems file
560 2024-09-26 14:00    Quantum spin nematic phase in a square-lattice iridate
559 2024-09-03 12:00    2024 가을학기 물리학과 특별세미나 전체 일정 (응집물리 및 광학분야) file
558 2024-09-02 16:00    2024학년도 가을학기 물리학과 콜로키움(Physics Colloquium) file
557 2024-08-22 16:00    [CAPP seminar] Development of a 12-20 GHz CO Intensity Mapping Receiver for Capturing the Star-formation History in the Early Universe file
556 2024-08-16 11:00    Cathodoluminescence for nanophotonics: Applications to plasmonic bandgap materials and perovskite semiconductors file