TY - JOUR AU - Calogero, Francesco C. AU - Gómez-Ullate Otaiza, David PY - 2007 DO - 10.1088/1751-8113/40/20/007 SN - 1751-8113 UR - https://hdl.handle.net/20.500.14352/51450 T2 - Journal of physics A: Mathematical and theoretical AB - Two novel classes of many-body models with nonlinear interactions 'of goldfish type' are introduced. They are solvable provided the initial data satisfy a single constraint (in one case; in the other, two constraints), i.e., for such initial data the... LA - eng M2 - 5335 PB - IOP Publishing Ltd KW - Quasi-exact solvability KW - Subspaces TI - Two novel classes of solvable many-body problems of goldfish type with constraints TY - journal article VL - 40 ER -