xPand is a computer algebra code for doing cosmological perturbation theory on a set of homogenioues background. It is part of the xAct distribution that runs on Mathematica.
INSTALLATION NOTES FOR THE xPand PACKAGE
General Information:
Visit http://www2.iap.fr/users/pitrou/xpand.htm
In order to install xPand, you first need to install xAct.
Installation of xAct:
Download the latest the xAct package on 'http://www.xact.es/download.html'. Install instructions are provided on this website.
Once xAct is installed correctly, it should be located in one of the places that Mathematica prepares for external applications:
Linux:
-
system-wide installation (requires root priviledges):
/usr/share/Mathematica/Applications/
or/usr/local/Wolfram/Mathematica/9.0/AddOns/Applications/
-
single-user installation:
$HOME/.Mathematica/Applications/
Mac OS:
-
system-wide installation (requires root priviledges):
/Library/Mathematica/Applications/
or/Applications/Mathematica 9.0.app/AddOns/Applications/
-
single-user installation:
/Users//Library/Mathematica/Applications/
MSWindows:
-
system-wide installation:
C:\Documents and settings\All Users\Application data\Mathematica\Applications\
orC:\Program Files\Wolfram Research\Mathematica\9.0\AddOns\Applications\
-
single-user installation:
C:\Documents and settings<user>\Application Data\Mathematica\Applications\
Beware that in Windows these directories might be hidden!
Installation of xPand:
The package can be downloaded as a single tarball xPand_0.4.0.tar.gz. When uncompressed (typing 'tar -xzvf xPand_0.4.0.tar.gz' under Linux), it gives -a folder 'xPand' -a file 'xPand.m' -this documentation file 'documentation_xpand.txt''
Note that in some cases, for instance if you uncompress the tarball by a double click, these 3 items are likely to be placed below a folder named xPand_0.4.0.
The folder xPand, and the file 'xPand.m' must be placed inside the xAct directory. For instance, in a single user installation with Mac OS, there should be a folder /Users//Library/Mathematica/Applications/xAct/xPand and a file /Users//Library/Mathematica/Applications/xAct/xPand.m
Documentation:
To load the CMB documentation go to `Add-Ons and Packages' in the Documentation Center (versions 6.0 of Mathematica at least required), then in 'xAct Packages' and 'xPand'.
Then the package can be loaded using unix style
<<xAct/xPand.m
or Mathematica style
<<xAct`xPand`
If you encouter any problem, don't hesitate to contact me at
pitrou@iap.fr
This is the "install" file of xPand. Last update: 8 Feb 2013.