Special Session 104: 

The collinear four body problem and beyond

MERCE OLLE
UNIVERSITAT POLITECNICA DE CATALUNYA
Spain
Co-Author(s):    Martha Alvarez-Ramirez, Esther Barrabes, Mario Medina
Abstract:
We consider the collinear symmetric four-body problem, where four masses $m_3 = \alpha$, $m_1 = 1$, $m_2 = 1$ , and $m_4 =\alpha$ , $\alpha > 0$, are aligned in this order and move symmetrically about their center of mass. More precisely we analyse orbits that eject from quadruple collision and describe different kind of trajectories, including return to quadruple collision or escape to infinity. A more general setting (covering other problems described by two degrees of freedom systems) is also discussed.