Analytic solutions of topologically disjoint systems

J. R. Armstrong, A. G. Volosniev, D. V. Fedorov, A. S. Jensen, N. T. Zinner

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We describe a procedure to solve an up to 2N problem where the particles are separated topologically in N groups with at most two particles in each. Arbitrary interactions are allowed between the (two) particles within one group. All other interactions are approximated by harmonic oscillator potentials. The problem is first reduced to an analytically solvable N-body problem and N independent two-body problems. We calculate analytically spectra, wave functions, and normal modes for both the inverse square and deltafunction two-body interactions. In particular, we calculate separation energies between two strings of particles. We find that the string separation energy increases with N and interaction strength.

Original languageEnglish (US)
Article number085301
JournalJournal of Physics A: Mathematical and Theoretical
Issue number8
StatePublished - Feb 27 2015
Externally publishedYes


  • exactly solvable models
  • few-body systems
  • harmonic expansion

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Modeling and Simulation
  • Mathematical Physics
  • Physics and Astronomy(all)


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