Cooper pairs and bipolarons
  It is shown that Cooper pairs are a solution of the bipolaron problem for model Fr\"{o}hlich Hamiltonian. The total energy of a pair for the initial Fr\"{o}hlich Hamiltonian is found. Differences between the solutions for the model and initial two-particle problems are discussed. 
Victor D. Lakhno
cond-mat.str-el cond-mat.quant-gas