%0 Journal Article %T Twiss Parameters of Coupled Particle Beams with Equal Eigenemittances %A V. Balandin %A R. Brinkmann %A W. Decking %A N. Golubeva %J Physics %D 2012 %I arXiv %X We show that the 1D Courant-Snyder theory can be considered as a partial case of the multidimensional theory of coupled particle beams with equal eigenemittances. %U http://arxiv.org/abs/1205.3589v1