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Published in:
2011 | OriginalPaper | Chapter
Theory of Radiation
Authors : Stephen J. Gustafson, Israel Michael Sigal
Published in: Mathematical Concepts of Quantum Mechanics
Publisher: Springer Berlin Heidelberg
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Emission and absorption of electromagnetic radiation by systems of non- relativistic particles such as atoms and molecules is a key physical phe- nomenon, central to the existence of the world as we know it. Attempts to understand it led, at the beginning of the twentieth century, to the birth of quantum physics. In this chapter we outline the theory of this phenomenon. It addresses the following fundamental physical facts: