- Ninja - version 1.1.0
- Author: Tiziano Peraro
Ninja implements the Laurent series expansion method for the computation of one-loop integrals.
It is based on:
-
P. Mastrolia, E. Mirabella and T. Peraro, "Integrand reduction of one-loop scattering amplitudes through Laurent series expansion," JHEP 1206 (2012) 095 arXiv:1203.0291 [hep-ph].
-
T. Peraro, "Ninja: Automated Integrand Reduction via Laurent Expansion for One-Loop Amplitudes," Comput. Phys. Commun. 185 (2014) 2771 arXiv:1403.1229 [hep-ph]
Ninja can be compiled and installed with the commands
./configure
make
make install
In order to compile and link the built-in interface to the
OneLoop
library use --with-avholo[=FLAGS] during configuration e.g.
./configure --with-avholo
make
make install
if OneLoop is installed in a standard directory, or
./configure --with-avholo='-L/path/to/avh_olo/lib -lavh_olo' \
FCINCLUDE=-I/path/to/avh_olo/include
make
make install
if it is installed in /path/to/avh_olo/lib and the corresponding
Fortran90 module avh_olo is installed in /path/to/avh_olo/include.
In order to compile the built-in interface to the
LoopTools library (requires
LoopTools-2.9 or later) use --with-looptools[=FLAGS] during
configuration e.g.
./configure \
--with-looptools='fldflags -L/path/to/looptools/lib -looptools' \
CPPFLAGS=-I/path/to/looptools/include
make
make install
where /path/to/looptools/ is the directory where LooTools is
installed and fldflags stands for the additional flags the library
requires for static linking (you can find them e.g. in the file
bin/fcc in the main installation directory of LoopTools). You can
omit the FLAGS argument of --with-looptools if you do not wish to
compile the examples.
For a full list of available options type
./configure --help
See the file INSTALL for more information about the installation
procedure.
If you specified the --prefix option for the configure scrip, you
should also add the directory where the library is installed to your
LD_LIBRARY_PATH (and DYLD_LIBRARY_PATH on Mac OS) environment
variable, if not already present. This is typically a sub-directory
lib/ or lib64/ of the one you specified with --prefix.
The examples which come with the distribution can be compiled, after installation, using the command
make examples
either in the top directory or in the examples/ directory. Examples using POSIX threads can be compiled (if supported) with
make thread-examples
The Python package NinjaNumGen can be used both as a Python module and as a script in order to generate the input needed for Ninja. It can be installed using the command
python setup.py install
in the utils/ directory. The command
python setup.py --help
will give a list of installation options. If you specified the
--prefix option during installation, update your PATH and
PYTHONPATH environment variables accordingly.
The package NinjaNumGen requires Form-4 or later.