COST
We are members of the 
COST
  Action MP1006 ("Fundamental Problems in Quantum
  Physics"). 
Within this Action, we represent the Work Group WG2
"Effective Description of Complex Systems". The Action is aimed at the
formation of a unified platform of researchers devoted to the
understanding of quantum processes and phenomena at a fundamental
level.
The following workshops and training schools have been organized by WG2:
  
Madrid COST Workshop on "Open Quantum Systems" (2011)
COST/CECAM Rome Training School on "Open Systems and the 
Quantum Classical Boundary" (2013) 
Frankfurt COST Workshop on "Quantum and Classical
   Complexity: From Atoms to Biosystems" (2014)