A variational approach to periodic orbits in the $e^{-}{Z}^{2+}{e}^{-}$ Helium

Zixuan Ye

In this article, we use variational approaches to describe generalized solutions $(q_1,q_2)$ and critical points $(z_1,z_2)$ of the action functional ${\mathcal{B}}_{av}$ for the Hel…