In a message dated 4/25/02 4:40:05 PM Eastern Daylight Time,
kraused@WABASH.EDU writes:
<< In Feynman's "Feynman Lectures on
Gravitation," he finds that if one tries to develop a theory of
gravity in which gravity doesn't gravitate (a linear theory), one
obtains the incorrect value of the perihelion precession. Only when
one includes non-linear corrections (gravity gravitating) does the
theory match up with experiment. >>
Dennis Thank you for the very helpful response. I have Wheeler's and Thorne's
book on gravitation on order which should be useful in providing addition
insight into this question. Apparently the gravitational metric can be
expanded in a perturbation series, which provide the small correction. The
higher order terms provide the non Abelian correction.