- Centre for Chaos And Turbulence Studies CATS is now a part of Complexity Lab at the Niels Bohr Institute and the Danish Technical University. CATS - Niels Bohr Institute, University of Copenhagen (full addresses) CATS - Physics Department, Technical University of Denmark CATS - Chemistry Institute, University of Copenhagen Index - Index of the CATS pages. Research - Conferences, preprints, ...www.nbi.dk/CATS