%0 Journal Article %T Few-body quark dynamics for doubly heavy baryons and tetraquarks %A Richard, J. M. %A Valcarce, A. %A Vijande, J. %J Physical Review C %D 2018 %V 97 %N 3 %I Amer Physical Soc %@ 2469-9985 %G English %F Richard_etal2018 %O WOS:000428505400005 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3543), last updated on Wed, 11 Apr 2018 13:23:18 +0000 %X We discuss the adequate treatment of the three- and four-body dynamics for the quark model picture of double-charm baryons and tetraquarks. We stress that the variational and Born-Oppenheimer approximations give energies very close to the exact ones, while the diquark approximation might be somewhat misleading. The Hall-Post inequalities also provide very useful lower bounds that exclude the possibility of stable tetraquarks for some mass ratios and some color wave functions. %R 10.1103/PhysRevC.97.035211 %U http://arxiv.org/abs/1803.06155 %U https://doi.org/10.1103/PhysRevC.97.035211 %P 035211-10pp