The symmetry and Efimov's effect in systems of three-quantum particles
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- Vugal'ter, S.A. & Zhislin, G.M. Commun.Math. Phys. (1982) 87: 89. doi:10.1007/BF01211058
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The finiteness of the discrete spectrum of three body Schrödinger operators restricted to certain symmetry subspaces is proved. The symmetry subspaces are those associated with nonzero angular momentum and those associated with two or three identical fermions.