Keywords: user_guide

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## 1.1 People

The maintenance and further development of the QUANTUM ESPRESSO distribution is promoted by the QUANTUM ESPRESSO Foundation under the coordination of Paolo Giannozzi (Univ. Udine and IOM-CNR, Italy) and Pietro Delugas (SISSA Trieste) with a strong support from the MaX - Materials design at the Exascale EU Centre of Excellence. The development of the GPU-enabled version is coordinated by Pietro Bonfà (Univ. Parma).

Contributors to QUANTUM ESPRESSO, beyond the authors of the papers mentioned in Sec.1.4, include:

- Federico Ficarelli and Daniele Cesarini (CINECA), with help from Ye Luo (Argonne) and Sebastian Gsänger, for CMake support;
- Ye Luo (Argonne) for improved FFT threading and miscellaneous contributions and optimizations;
- Fabio Affinito (CINECA) for ELPA support, for contributions to the FFT library, and for various parallelization improvements;
- Sebastiano Caravati for direct support of GTH pseudopotentials in analytical form, Santana Saha and Stefan Goedecker (Basel U.) for improved UPF converter of newer GTH pseudopotentials;
- Axel Kohlmeyer for libraries and utilities to call QUANTUM ESPRESSO from external codes (see the `COUPLE` sub-directory), made the parallelization more modular and usable by external codes;
- Èric Germaneau for TB09 meta-GGA functional, using `libxc`;
- Guido Roma (CEA Saclay) for vdw-df-obk8 e vdw-df-ob86 functionals;
- Yves Ferro (Univ. Provence) for SOGGA and M06L functionals;
- Ikutaro Hamada (NIMS, Japan) for RPBE, OPTB86B-vdW, REV-vdW-DF2 functionals, fixes to pw2xsf utility;
- Daniel Forrer (Padua Univ.) and Michele Pavone (Naples Univ. Federico II) for dispersions interaction in the framework of DFT-D;
- Filippo Spiga (University of Cambridge, UK) for mixed MPI-OpenMP parallelization and for the GPU-enabled version;
- Costas Bekas and Alessandro Curioni (IBM Zurich) for the initial BlueGene porting.

Contributors to specific QUANTUM ESPRESSO packages are acknowledged in the documentation of each package.

An alphabetic list of further contributors who answered questions on the mailing list, found bugs, helped in porting to new architectures, wrote some code, contributed in some way or another at some stage, follows:

> Åke Sandgren, Audrius Alkauskas, Alain Allouche, Francesco Antoniella, Uli Aschauer, Francesca Baletto, Gerardo Ballabio, Mauro Boero, Scott Brozell, Claudia Bungaro, Paolo Cazzato, Gabriele Cipriani, Jiayu Dai, Stefano Dal Forno, Cesar Da Silva, Alberto Debernardi, Gernot Deinzer, Alin Marin Elena, Francesco Filipponi, Prasenjit Ghosh, Marco Govoni, Thomas Gruber, Martin Hilgeman, Yosuke Kanai, Konstantin Kudin, Nicolas Lacorne, Hyungjun Lee, Stephane Lefranc, Sergey Lisenkov, Kurt Maeder, Andrea Marini, Giuseppe Mattioli, Nicolas Mounet, William Parker, Pasquale Pavone, Mickael Profeta, Chung-Yuan Ren, Kurt Stokbro, David Strubbe, Sylvie Stucki, Paul Tangney, Pascal Thibaudeau, Davide Tiana, Antonio Tilocca, Jaro Tobik, Malgorzata Wierzbowska, Vittorio Zecca, Silviu Zilberman, Federico Zipoli,

and let us apologize to everybody we have forgotten.

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