visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Weiss fields for Quantum Spin Dynamics

2022.03.28 16:20

admin 조회 수:296

날짜 2022-03-31 10:00 
일시 10AM, 31th Mar. 
장소 E6 #1501/zoom 
연사 Dr. Samuel Begg (APCTP) 
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 장소 제목
공지 2022-10-24 16:00  E6 #1501(공동강의실)  Physics Colloquim(Fall 2022)
공지 2022-09-21 10:30  E6-1 #1501  [Update 세미나 영상] Distinguished Lecture 'The Magic of Moiré Quantum Matter' Prof. Pablo Jarillo-Herrero(Department of Physics, MIT)
공지 2022-11-11 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid
공지 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
공지 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
공지 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions
공지 2022-09-22 11:00  E6-1 #1323  2022 가을학기 응집물리 및 광학 세미나 전체 일정
296 2018-05-11 14:30  E6-2. 1st fl. #1323  Disordered Floquet topological insulators file
295 2018-05-09 16:00  #1323, E6-2  Recent advances in thermoelectric bulk composites file
294 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
293 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
292 2019-05-08 16:00  E6 Room(#1323)  Imaging valley dependent electron transport in 2D semiconductors file
291 2018-05-31 16:00  #1323, E6-2  Dynamic control of optical properties with gated-graphene metamaterials file
290 2016-05-31 16:00  #1323(E6-2, 1st fl.)  Understanding 3D tokamak physics towards advanced control of toroidal plasma
289 2019-05-31 11:00  #1323, E6-2  Cavity QED with Spin Qubits file
288 2019-05-30 16:00  #1323, E6-2  Tuning the excitonic properties of semiconductors with light-matter interactions file
287 2018-05-29 16:00  #1323, E6-2  Investigation on metal nanostructure/semiconductor junction and its applications file
286 2022-05-27 11:00  Online seminar  Current Status and Future Plans of ADMX file
285 2016-05-24 16:00  E6-2. #1323(1st fl.)  Electronic and magnetic properties of 2D transition-metal thiophosphates and tunability of magnetic order with carrier density
284 2019-05-24 16:00  #1323, E6-2  Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates file
283 2019-05-21 16:00  #5318, E6-2  Classification of flat bands according to the band-crossing singularity of Bloch wave functions file
282 2019-05-02 16:00  #1323, E6-2  Anomalous optical properties of halide perovskites file
281 2016-05-19 15:00  May 19, 2016 (Thur.) 3PM,  The CERN Resonant WISP Search: Development, Results and Lesson-Learned
280 2016-05-19 16:00  #1323(E6-2, 1st fl.)  Nonlinear/quantum optical effect in silicon nano-photonics
279 2016-05-16 16:00  #1323(E6-2, 1st Fl.)  Tuning microwave cavities with biased nonlinear dielectrics for axion searches
278 2016-05-13 13:30  E6. #1501(1st fl.)  Aperiodic crystals in low dimensions
277 2016-05-13 16:00  E6. #1501(1st fl.)  Graphene analogue in (111)- BaBiO3 bilayer heterostructures for topological electronics