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Björn O. Roos (1937–2010)

✍ Scribed by Werner Kutzelnigg

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
153 KB
Volume
49
Category
Article
ISSN
0044-8249

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✦ Synopsis

graduated in 1968 as a student of Inga Fischer-Hjalmars in Stockholm on the "zero differential overlap" approximation, which played a key role in the then dominating semi-empirical quantum chemistry. He spent a year as a postdoc in the group of Enrico Clementi at the IBM Research Institute in San Jose (USA), where he was initiated to the rapidly developing field of numerical ab-initio quantum chemistry.

Roos first important contribution to quantum chemistry has, in 1972, been the method known now as "direct CI". Unlike to what used to be common in

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