Solid-State and Molecular Theory Group

Slater, J. C, Technical Reports and the Quarterly Progress Reports of the Solid State and Molecular Theory Group at MIT, 1950- Phys. Rev. 

Koster, G. F., Motes on Group Theory, Technical Report Mo. 8, Solid State and Molecular Theory Group, M.I.T. (1966) (unpublished). 

Per-Olov Lowdin had a long and lasting interest in the analytical methods of quantum mechanics and my tribute to his legacy involves an application of the Wentzel-Kramers-Brillouin (WKB) asymptotic approximation method. It was the subject of a contribution(l) by Lowdin to the Solid State and Molecular Theory Group created by John C. Slater at the Massachusetts Institute of Technology. 

A five month stay with Neville Mott at Bristol in 1948, and extended periods with Robert Mulliken at Chicago, and with the group of Hertha Sponer at Duke University in the early 1950 s set the tone for life filled with international travel. Particularly significant was a stay with the Solid State and Molecular Theory Group of John C. Slater at the Massachusetts Institute of Technology. There developed a close association between Slater and Lowdin which was to last until Slater s death in 1976. 

ROBERT ENGLMAN, Solid-State and Molecular Theory Group,... 

J. C. Slater, Electronic structure of atoms and molecules. Technical Report No. 3. Solid-State and Molecular Theory Group. MIT, Cambridge, Mass., 1953. 

Wright JP (1963) Quarterly progress report solid state and molecular theory group. MTT, Cambridge, p 35... 

Individual and institutional ties with American scientists, universities, and organizations were a distinctive feature of Lowdin s career Slater acted as his mentor the organization of both Mulliken s Laboratory of Molecular Structure and Spectra and Slater s Solid-State and Molecular Theory Group inspired the creation and organization of the Quantum Chemistry Group. American agencies sponsored the group s activities. 

Slater, J. C. 1954. Work on molecular theory in the solid-state and molecular theory group. In Symposium on molecular physics. Held at Nikko on the occasion of the International Conference on Theoretical Physics, 1-4. Tokyo Maruzen Co., Ltd. 

Watson, R. E., Iron Series Hartree-Fock Calculations. Technical Report No. 12 of Solid-State and Molecular Theory Group, Massachusetts Institute of Technology, 1959. 

Note this excerpt from Solid State and Molecular Theory, WUey, London (1975) by John Slater on the permutation group (...) It irtw at this point that Wigner. Hund. Heitler. and Weyl entered the picture, with their... 

Up to now, a sufficient experience in the application of this promising method has not yet been reached however, there is little doubt that the theory of the separated electron groups is also suitable for the study of the intermolecular forces and of the changes of many molecular properties which accompany the formation of the condensed phases, such as, for instance, the change of the quadrupole coupling constant from the gaseous to the solid state and the effect of the temperature on the same constant in solids. 

We will not deal here with the subject of EPR spectroscopy of the solid state. In this field of investigation a kind of delta-like approach such as that recently proposed to deal with molecular dynamics in the liquid state has developed naturally. According to the European Molecular Liquid Group (EMLG), the symbol A symbolizes the cooperative efforts of computer simulation, experiment, and theory. Knak Jensen and Hansen, for instance, carried out a computer simulation of the dynamics of N identical spins placed in a rigid simple cubic lattice subject to an external magnetic field Bq. a further example of numerical study is the paper of Sur and Lowe. Free-induction decay measurements,on the other hand, represent the experimental comer of this ideal triangle, the theoretical comer of which is, of course, expressed by the theoretical papers mentioned above. 

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