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The 264th R-CCS Cafe (Mar 15, 2024)

Japanese
Details
Date Fri, Mar 15, 2024
Time 3:00 pm - 3:50 pm (3:00 pm - 3:40 pm Talks, 3:40 pm - Free discussion and coffee break)
City Kobe, Japan/Online
Place

Lecture Hall (6th floor) at R-CCS, Online seminar on Zoom

  • If you are not affiliated with R-CCS and would like to attend R-CCS Cafe, please email us at r-ccs-cafe[at]ml.riken.jp.
Language Presentation Language: English
Presentation Material: English
Speakers

Katsumasa Nakayama

Field Theory Research Team
Postdoctoral Researcher

Bradon Cooper

Computational Molecular Science Research Team
Postdoctoral Researcher

Talk Titles and Abstracts

1st Speaker: Katsumasa Nakayama

Title:
Tensor renormalization group with the truncated singular value decomposition for the higher dimension
Abstract:
We review the formulations of the tensor renormalization group (TRG) including the system with the higher degree of freedom such as the higher dimension and the gauge interaction. In the tensor network calculation, we approximately contract the network by using the singular value decomposition or variational optimization. In order to improve the approximation and reduce the computational cost, there are various types of the TRG method which are represented as the combination of these approximation method. After these review, we also mention that the extension to the higher dimension using 3-dimensional system. We try to introduce more details of our recent work on the large degree of freedom, including the MDTRG.

2nd Speaker: Brandon Cooper

Title:
Exploring ways to reduce the cost of Time-dependent Equation-of-Motion Coupled-Cluster simulations for the description of molecular excited states

Important Notes

  • Please turn off your video and microphone when you join the meeting.
  • The broadcasting may be interrupted or terminated depending on the network condition or any other unexpected event.
  • The program schedule and contents may be modified without prior notice.
  • Depending on the utilized device and network environment, it may not be able to watch the session.
  • All rights concerning the broadcasted material will belong to the organizer and the presenters, and it is prohibited to copy, modify, or redistribute the total or a part of the broadcasted material without the previous permission of RIKEN.

（Mar 6, 2024）