I kown what you said, what's important for me is the derivation from the gravity field action(Einstain-hiber action) to gravity field equation(einstain eqution).
Thank you all the same!
could you please tell me how to obtain gravity equation from gravity field Action S as in detail as possible, especially the derivation of calculus of variations?
or you could point out some papers for me,
and thanks very very very very very very very very very much!
p.s. as in detail as...
could you please tell me how to obtain gravity equation from gravity field Action S as in detail as possible, especially the derivation of calculus of variations?
or you could point out some papers for me,
and thanks very very very very very very very very very much!
p.s. as in detail as...