摘要
For the N-centre problem in the three dimensional space, x = Sigma(N)(i=1) m(i) (x - c(i)) vertical bar x - c(i)vertical bar(alpha+2), x is an element of R-3\{c(1), ..., c(N)}, where , and , we prove the existence of entire parabolic trajectories having prescribed asymptotic directions. The proof relies on a variational argument of min-max type. Morse index estimates and regularization techniques are used in order to rule out the possible occurrence of collisions.
- 出版日期2017-3