text: Giovanni Vignale is an Italian American physicist and Professor of Physics at the University of Missouri.  Vignale is known for his work on density functional theory - a theoretical approach to the quantum many-body problem - and for several contributions to many-particle physics and spintronics.  He is also the author of a monograph on the "Quantum Theory of the Electron Liquid" (with Gabriele F. Giuliani) and a book entitled "The Beautiful Invisible - Creativity, imagination, and theoretical physics".