• Spherical equilibrium arrangements of four point particles which interact pairwise with repulsive power law forces
  • Project Year: 2020
  • REU Student (s):   Joy Hamlin | Stony Brook University NY  
  • Student 1 Institution: Stony Brook University
  • Project Mentor: Michael Kiessling
  • Project Mentor Area: Mathematics
  • Project Abstract: I surveyd equilibrium arrangements, proper as well as pseudo, of four point particles on the unit circle which interact pairwise with a repulsive power law force. The bifurcation diagram which jointly exhibits all these equilibrium arrangements as functions of s features four obvious "universal" equilibria, which do not depend on s, and many more continuous families of s-dependent non-universal equilibria, some of which were known before but many were not. All equilibria are also planar special cases of the analogous four-particle equilibrium problem on the 2-sphere, some of which are also studied.