Tetraquark states in QCD at large number of colors Nc

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Lunedì 25 novembre, alle ore 14.30, presso l'aula C di via della Vasca Navale 84.

Speaker: Dmitry Melikhov (Institute of Nuclear Physics, Moscow State University).

QCD at the large number of colors, Nc, is known to provide a theoretical understanding of qualitative features of hadrons and their interactions. I discuss QCD Green functions related to four-quark bound states, possible structure of these states (compact or extended) and the expected properties of these objects at large Nc.