The Yambo project

Yambo is a FORTRAN/C code for Many-Body calculations in solid state and molecular physics. Yambo relies on the Kohn-Sham wavefunctions generated by two DFT public codes: abinit, and PWscf. The code was originally developed in the Condensed Matter Theoretical Group of the Physics Department at the University of Rome "Tor Vergata" by Andrea Marini. Previous to its release under the GPL license, yambo was known as SELF.

Yambo is an important member of the key group of ab initio spectroscopy codes supported by the European Theoretical Spectroscopy Facility.

See features for an extensive overview or enjoy the view of the developers' faces.

If you want to know more follow the documentation links or read the Quick Guide and Frequently Asked Questions.

News

14/01/2010
The Yambo tutorial-day at the Benasque 2010: Time-Dependent Density-Functional Theory: Prospects and Applications school is over. Talks and pictures have been uploaded in the Events page.

30/11/2009
Press page added and more documents in the lecture page.

November 2009
Yambo: a cover story!
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The paper Ab initio electronic and optical spectra of free-base porphyrins: the role of electronic correlation by Maurizia Palummo, Conor Hogan, Francesco Sottile, Paolo Bagala', and Angel Rubio, was recently published in the Journal of Chemical Physics, where it made the front cover. It has been also identified on the list of Journal of Chemical Physics Top 20 Most Downloaded Articles in September 2009. In the paper, Yambo was used to apply the GW and BSE methods, traditionally used in physics applications, to a kind of system normally studied by quantum chemists by means of (the more computationally demanding) wavefunction-based approaches, namely, porphyrin molecules. Yambo yielded excitation spectra in good agreement with experimental data and with quantum chemical results, and thus offers chemists an alternative or complementary means for studying such kinds of isolated systems.

Yambo on the JCP cover!

14/11/2009
Several updates and changes
Added pictures and movies of the 2008 and 2006 Benasque schools (events), and more developers in the team page.

11/11/2009
Lectures note page added.
Claudio Attaccalite has created a Lecture Notes page where it is possible to download free documents covering most of the basic concepts used in the Yambo code.

7/10/2009
Yambo repository moved!
Important change in the access to the Yambo SVN repository: the Yambo SVN repository has been moved to a new server. Please check the download page for more informations.

1/9/2009
SVN server problems.
Two weeks ago the server anomaly.roma2.infn.it had serious hardware problems and was shut down. The repository has been migrated to another temporary machine. We created a DNS alias in order to be able to access the repository still using the hold hostname (anomaly). Please report to yambo@yambo-code.org any problem in connecting to anomaly.

24/7/2009
Yambo paper published !
The Yambo paper has been published on Computer Physics Communications. You can download the paper here. Remember to acknowledge Yambo in your papers by citing this article!

7/7/2009
3.2.1 (revision 448) released.
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Important change in the access policy of the Yambo SVN repository: yambo is a member of the software tools supported by the European Theoretical Spectroscopy Facility (ETSF). The ETSF asked us to monitor the number of yambo users. While this is easy to do for the users that download the source directly from the yambo web-page there is not easy way to controll the accesses to the SVN respository. For this reason the SVN repository is now password protected. Of course the SVN repository will remain freely accessible, and anyone can have the password. To this end it is enough to send an E-mail to yambo@yambo-code.org asking for the access to the SVN repository.