Abstract
In this chapter, devoted to microscopic approaches, we derive the general expression of the decay width, known as the Fermi golden rule, by using the time-dependent Schrödinger equation. We also introduce the equivalent surface formula containing the preformation amplitude. Then, we show that these relations can be recovered within the reaction Feshbach theory and R-matrix approach. We describe the Resonating Group Method, as the most general microscopic approach to analyze the emission of composite objects.
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Delion, D.S. (2010). Microscopic Emission Theories. In: Theory of Particle and Cluster Emission. Lecture Notes in Physics, vol 819. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14406-6_8
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DOI: https://doi.org/10.1007/978-3-642-14406-6_8
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