Abstract:
In this talk I will discuss the quark mass dependence of several exotic resonance states. On the one hand, I will talk about the T_cc, the light and heavy pion mass dependence, and discuss about the effect of the ρ and pion exchange. On the other hand, I will review a recent work of analysis of LQCD data related to the Λ(1405), where the quark mass dependence was extracted as the pole positions in the SU(3) limit.