Speaker: Prof. Philippe Corboz (Institute for Theoretical Physics, University of Amsterdam)
Title: Infinite projected entangled-pair states: ground states, finite temperature, excitations, and extensions to 3D.
Start Date/Time: 2023-03-15 / 15:30 (Taipei time)
End Date/Time: 2023-03-15 / 16:30
Host: Prof. Chia-Min Chung (Department of Physics, NSYSU)
Online Zoom Link: https://us02web.zoom.us/j/86867205231?pwd=OTJVTURuVU9FVzkzR01kMVUwcGVvZz09
Abstract: An infinite projected entangled-pair state
(iPEPS) is a tensor network ansatz to represent 2D wave functions directly in
the thermodynamic limit, which in the past decade has become a powerful tool
for the study of strongly correlated systems. In this talk I give an overview
of recent developments beyond the usual 2D ground state calculations, including
simulations at finite temperature, low-energy excitations, and extensions to 3D
and layered systems. I will show how these tools helped us to understand the
rich and intriguing physics of the quantum material SrCu2(BO3)2 under pressure
and in a magnetic field, which is effectively described by the
Shastry-Sutherland model.
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