@article {834, title = {Well-tempered Metadynamics Converges Asymptotically}, journal = {Phys. Rev. Lett.}, volume = {112}, year = {2014}, pages = {1-6}, chapter = {240602}, doi = {10.1103/PhysRevLett.112.240602}, author = {J. F. Dama and M. Parrinello and G. A. Voth} }