I am looking for a Mathematica package that can manipulate tensors for supergravity, string theory or M-theory. I am particularly looking for a package that can do spinor and Clifford algebra computations. Also, I would like this package to be able to do wedge and hodge dual, and other computation relating to forms.
Can anyone suggest a specific one? I looked for atlas2, but it seems I have to pay to use it without a trial version.



Mathematica package for supergravity and string theory
You may try xact
<http://www.xact.es/AVF/index.html>
or see if <http://sagemanifolds.obspm.fr/> for sage works for you.


