The discussion centers on the challenges of computing the Einstein tensor using the FLRW metric, specifically referencing Chapter VII of "Introduction to Gravitation" by Venzo De Sabbata and Maurizio Gasperini. Participants emphasize the importance of accurately applying the field equations and suggest using computational tools like Maxima to facilitate the calculations. The conversation highlights the necessity of detailing specific mathematical difficulties to receive effective assistance.
PREREQUISITESStudents and researchers in theoretical physics, particularly those focusing on General Relativity and cosmological models, will benefit from this discussion.
Where? Please give a reference.BiaCarvalho said:
Introduction to Gravitation Venzo De Sabbata, Maurizio Gasperini - 1985PeterDonis said:
Which chapter/section in particular?BiaCarvalho said:
Chapter VII - Non-Static Models Of UniversePeterDonis said:
What have you tried? The computations are somewhat tedious, but should be straightforward, since you are given the metric and just need to compute its Einstein tensor.BiaCarvalho said:
I was trying to do it like in the book, applying the field equation in the first equation of the chapter, I probably got lost in the math so...PeterDonis said:
If you can post specific places in the math where you're having trouble, we could try to help with that. Computing the Einstein tensor of a given metric is a basic task in GR, so it's worth taking the time to work it through in detail for important cases like this one.BiaCarvalho said:
yes yes... I'm going to do it again and switch to latex, then I'll post it here later :DPeterDonis said: