- #1
Isa1
- 1
- 0
Hi there,
I'm trying to understand the derivation of geodesic deviation given here:
http://wps.aw.com/wps/media/objects/500/512494/supplements/Ch21.pdf
but I can't figure out why x(t)+\chi(t) obeys the geodesic equation (eq.(7)). Of course x(t) does, since it is per definition a geodesic. Could it be that \chi(t) is so small that it is negligible and doesn't change the geodesic character of x(t)?
I'd really appreciate some help. Thanks!
I'm trying to understand the derivation of geodesic deviation given here:
http://wps.aw.com/wps/media/objects/500/512494/supplements/Ch21.pdf
but I can't figure out why x(t)+\chi(t) obeys the geodesic equation (eq.(7)). Of course x(t) does, since it is per definition a geodesic. Could it be that \chi(t) is so small that it is negligible and doesn't change the geodesic character of x(t)?
I'd really appreciate some help. Thanks!