Ioan Baldea is from Theoretische Chemie Universität Heidelberg, Germany. His research interest relays on low-dimensional systems (Krogmann salt, NbSe_3, polyacetylene, etc); many-body theory (Green's functions, Feynman diagrams, functional integration, exact (Lanczos) numerical diagonalization); mesoscopic systems; optical absorption, photoionization, high-harmonic generation in nanostructures; quantum dots, nanorings; strongly correlated electrons and strong electron-phonon coupling with emphasis on mesoscopic and nanoscopic systems; extended Hubbard models and related; quantum dot arrays, nanorings, single-electron transistors.