We’re pleased to confirm the forth edition of our biennial ALF User Workshop!
Save the date:
Where:
Its program will include hands-on tutorials and workshop projects, as well as deep-dive talks by participants and invited speakers — there will be something for beginners and experienced researchers alike.
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After some time in the works, ALF’s reference documentation, published in SciPost Physics Codebases has been updated:
ALF Collaboration, The ALF (Algorithms for Lattice Fermions) project release 2.4. Documentation for the auxiliary-field quantum Monte Carlo code. SciPost Phys. Codebases 1-v2.4 (2025). https://doi.org/10.21468/SciPostPhysCodeb.1-v2.4
Notice the current release of the package is ALF 2.6 and we recommend the latest, development version of the code for the latest features and bug fixes.
The latest stable version of the package is now ALF 2.6.
Major improvements have been made to the package’s maximum entropy method (MaxEnt), including:
An important internal change is the Hubbard Stratonovich fields now being implemented as complex variables instead of real — notice this is a compatibility breaking change.
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ALF now offers a mailing list, hosted by the German Research Network (DFN), and you can subscribe here:
https://www.listserv.dfn.de/sympa/info/jmu-alf-qmc.
It’s a new channel, open to anyone with an email account, through which you can receive announcements, news, inquiries and much more related to the ALF/pyALF packages.
The Helmholtz Platform for Research Software Engineering (HiRSE) is promoting ALF as part of their HiRSE Code Promotion for projects with substantial German participation.
Thank you for your support!
Their ALF slide is also available as a PDF.
Last month we hosted in Würzburg, Germany the 3rd iteration of the ALF Workshop. Being offered for the first time in a hybrid format, the conference was quite productive, and also challenging, fun and tasty! Check a few pictures in the event’s website (see if you can catch the throwable cubic blue microphone in the air):
https://alfworkshop2024.sciencesconf.org/resource/gallery/id/6
The conference also provided a few interesting additions to the “Quantum Matter Talks” series in our YouTube channel:
https://www.youtube.com/playlist?list=PLGG-0KzRqw_giA44UW-igqKWndam7olrW
as well as updates to the “ALF Basics” playlist:
https://www.youtube.com/playlist?list=PLGG-0KzRqw_jO7CcLdOToQvmF3npdPp-i
ALF User Workshop is back for its third editon: ALF Workshop 2024!
Registrations are already open: https://alfworkshop2024.sciencesconf.org/.
The event will take place in a hybrid format with both in-person and online sessions to be held simultaneously from 15/July/2024 to 19/July/2024 and is aimed at both beginners and advanced users. A detailed program is not yet available, but it will include:
Whether you’d like to learn the basics of ALF, or could use some help with implementing your own Hamiltonian or measurement, this workshop puts the whole team at your disposal.
[Read More]The latest stable version of the package is now ALF 2.5.
The main improvements with respect to 2.4 are:
With respect to the latter point: as of ALF 2.5 a file named RUNNING is generated in each run directory and is deleted upon successful completion of the run. Restart is not allowed if the file RUNNING is not present.
The latest stable version of the package is now ALF 2.4.
The main improvements with respect to 2.3 are:
configure.sh (issue 219).* In the ALF code, the flavor index refers to degrees of freedom that are block diagonal. For example, for the Hubbard model with the Hubbard-Stratonovich transformation that couples to the \(z\)-component of the magnetization, the flavor index corresponds to the spin index. In many cases, there is a symmetry between different flavors, and one can now implement this with ALF 2.4. The speedup of a factor \(N_\text{fl}\) makes it definitely worth it making use of whenever possible.
[Read More]Check our new video: FAIR data & ALF.
We make the case for data management in science, present the concept of FAIR data, and report on the current status of the integration of ALF into the open materials repository NOMAD.