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Comment on the classical limit of spectral line broadening theory and Kirchhoff's law

✍ Scribed by J. Ward; J. Cooper; E.W. Smith


Publisher
Elsevier Science
Year
1974
Weight
294 KB
Volume
77
Category
Article
ISSN
0031-8914

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## Abstract We investigate the spectral theory of a general third order formally symmetric differential expression of the form acting in the Hilbert space ℒ︁^2^~__w__~ (__a__ ,∞). A Kummer–Liouville transformation is introduced which produces a differential operator unitarily equivalent to __L__