Recent content by inneed

Thanks for all your replies guys. I did check out the wikipedia article. I have to write a paper on the variational principle and I was told that the Einstein Hilbert action would be a good thing to talk about. I still don't have enough stuff to talk about though. Can you guys recommend any...

Can someone explain to me what Einstein Hilbert action is? and how it relates to the variational principle? I appreciate any help that I can get!