FLRW metric

9 views

Skip to first unread message

unread,

9:26 AM (15 hours ago) 9:26 AM

to xAct Tensor Computer Algebra

Hi everyone,

Can you help me?

I'm working with a metric:

DefManifold[M, dd, IndexRange[a, s]]

DefMetric[{3, 1, 0}, metric[-a,-b], cd, {";", "D"}, (*TorsionTrue,*)PrintAs -> "g"]

DefCovD[CD[-a], {";", "▽"}, Torsion -->True, Curvature --> True]

and with a Weyl tensor

DefTensor[A[-a], M].

Now I want to change metric to FLRW metric and to a particular form of A[-a] with a only conmponent A_0(t).

How can do this?

Thank you for your time

Manuele

Reply all

Reply to author

Forward

0 new messages