New xAlpha package!

[Sergi Sirera]

Hello xAct community,

I want to share a new package: xAlpha. This uses xPand to compute nonlinear cosmological perturbations in scalar-tensor theories of gravity, organises the equations and systematically rewrites them in terms of the useful alpha parameters.

Useful for cosmology calculations in modified gravity!

Feedback or suggestions are very welcome.

Best wishes,

Sergi