TranSIESTA School 2026

Technical University of Denmark, 9th - 13th November 2026

Topics covered (may be subject to changes):

• Usage of TranSIESTA/TBtrans and sisl.
• Correlated systems and the mean field Hubbard model.
• Single contacts by removal of periodic images.
• Modelling of extremely large systems with DFT precision.
• Manipulation of Hamiltonians by merging and creating real-space plots.
• ML usage for SCF improvements.

It will cost 250 EUR to participate, paid in advance. This will cover lunches, coffee breaks and the conference dinner. All other expenses are your own responsibility (accommodation, flights, etc.). One can sign up here.

Course material

The schools material is based on this repository.

Previous schools have lectures hosted here.

Tentative program

During the day we will provide lunch (all 5 days), coffee/tea and some sweets.

Registration

Please sign up here. The cost of 250 EUR is to be paid once we have confirmed your participation.

Preparation training

Students are expected to have some experience with DFT codes and condensed matter physics at an introductory level.

Participants

Welcome to all participants. We look forward to welcoming you at DTU.

We expect you all to share a 1-2 slide deck with your research and hope you’ll engage with each other with curiosity and respect for our different perspectives on research.

We hope that new collaborations and ideas will flourish in this gathering!

Getting to the venue

For public transportation, please read this page for general information.

That page has a link to a travel planner, however, usually www.rejseplanen.dk has more flexibility. Alernatively, Google Maps is also very reliable for public transportation.
Also, if you can, please use the rejsekort APP which enables easy purchase of tickets using your phone. Be sure to purchase the ticket BEFORE entering any transportation method.

These end-points are close to the venue (max 10 min walk):

• Akademivej - DTU (Letbane)
• Elektrovej (Lundtoftevej)
• Anker Engelundsvej - DTU (Letbane)
• DTU (Anker Engelunds Vej)
• Rævehøjvej, DTU (Helsingørmotorvejen)

Any GPS will easily get you to the venue (see exact place below).

The school is taking place at the Technical University of Denmark, Lyngby, in building 358. You can find the location on Google Maps here. Note, the light-rail stops very close to the venue (Akademivej - DTU (Letbane)). Once you enter the main entrance, turn left and continue down the hall to the end of the building (pretty long!).

Tutorials and executables

We expect students to come with their own laptops with a functional Linux or Mac operating system. Windows users may use WSL to get a Linux system.

To be ready for the workshop, please download this bash script, then follow these steps:

1. Installation of sisl and siesta:

    bash install_tutorial.sh install
   

   This will install the applications needed during the school.
   Simply follow the instructions and ensure you read when it prompts you to. It says where the folders will be located etc.

   The tutorials will be installed in ~/TBT-TS-sisl-workshop using the Miniforge3 installer.

2. Download of the tutorial files. If there are updates to the tutorials, simply run this:

    bash install_tutorial.sh download
   

   and it will (re-)download the tutorials.

   If executed subsequently with updated tutorial files it may result in new tutorial files that may be mixed with non-updated ones. So you’ll have to extract the content in separate folders and move data around. This shouldn’t pose any real issues, but be prepared as we might want to fix issues or update tutorials when we discover errors.

3. Update the script, if at any point we find problems with the installation script, you’ll be asked to update it. Execute the following command:

    bash install_tutorial.sh update
   

4. We will be using Jupyter Lab for doing the exercises, since they are normal Jupyter notebooks, you are free to use whatever editor you wish.

   Once you have downloaded the tutorials (step 2), you need to extract them. Do this (once!):

   cd ~/TBT-TS-sisl-workshop
   tar xfz tarball/sisl-TBT-TS.tar.gz
   

Whenever any tutorial is to be done, open them by the following:

cd ~/TBT-TS-sisl-workshop
source setup.sh
jupyter lab tutorial.ipynb

which enables a navigation on the files and folders using the Jupyter Lab interface.

Contact

If you have questions related to the payment details, please contact jslno <at> dtu.dk.
For other questions, please do not hesitate to bring them up on the sisl Discord channel. We encourage users to stay around the community at that channel.