APFEL: A PDF Evolution Library
APFEL is a library able to perform DGLAP evolution up to NNLO in QCD and to NLO in QED, both with pole and MSbar masses. The coupled DGLAP QCD+QED evolution equations are solved in x-space by means of higher order interpolations and Runge-Kutta techniques.
The APFEL library is accessible also through the APFEL Web interface. APFEL Web provides an online web-application which integrates several HEP softwares providing a complete suite plotting tools for PDFs and many related quantities (http://apfel.mi.infn.it/).
You can obtain APFEL directly from the GitHub repository:
For the last development version you can clone the master code:
git clone https://github.com/scarrazza/apfel.git
For the latest tag:
git tag -l git checkout tags/tag_name
Checkout the code and compile the code using the following procedure:
cd apfel ./configure --prefix=/where/install/apfel #(optional) make && make install
By the default, if prefix is not set, the program is installed in /usr/local. If you define a different prefix, remember to export it into the LD_LIBRARY_PATH.
If you observe memory issues while running APFEL on specific machines you can move the memory allocation to heap by adding the
export FFLAGS=$(echo $FFLAGS | sed 's/-fopenmp/-fno-automatic/g') ./configure --prefix=$PREFIX
- V. Bertone, S. Carrazza, J. Rojo, APFEL: A PDF Evolution Library with QED corrections, arXiv:1310.1394.
- S. Carrazza, A. Ferrara, D. Palazzo, J. Rojo, APFEL Web: a web-based application for the graphical visualization of parton distribution functions, arXiv:1410.5456.
Maintainers: Valerio Bertone, Stefano Carrazza