Rezső Gáspár

Born February 2nd, 1921 in Érsekvadkert, Hungary. Professor of Research at Institute of Theoretical Physics, Kossuth Lajos University, Debrecen, Hungary.

State Prize for activity in quantum chemistry (1965); Member of Hungarian Academy of Sciences (1970–); Member of the International Academy of Quantum Molecular Sciences (1974); Member of the European Academy of Arts and Sciences.

Author of:

Important Contributions:

• Exchange operator originating from (1/8)n⁴ two-electron integrals can be approximated by an exchange potential αCρ^1/3, where n and ρ are the number of basis functions and the density, respectively. Kohn–Sham–Gáspár potential.
• First theoretical determination of the electron affinity of Na and K with pseudopotential method and correlation in studying the ions Na^- and K^- that may have an important role in astrophysics.
• First interpretation of the electronic structure and properties of the semiconductors Se and Te on the basis of real crystal structure/group theory.
• Foundation and applications of the one-center or united-atom model of molecules. Theoretical interpretation of the properties of the metal Al. Studies on pseudopotentials and the method of molecular fragments.