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Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and the processes by which these arrangements change. This includes ions as well as neutral atoms and, unless otherwise stated, for the purposes of this discussion it should be assumed that the term atom includes ions.

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What is the relation between the Adiabatic Approximation used in quantum chemistry and the o...

I am an aspiring quantum chemist and have come across two vastly different versions of the Adiabatic Approximation when studying Quantum Mechanics from the perspective of physics and chemistry respect …
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3 votes
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How to derive the expression for derivative couplings on using the Born-Oppenheimer expansion?

I am trying to understand the derivation for the non-adiabatic coupling (NAC) elements as presented in Conical Intersections Electronic Structure, Dynamics and Spectroscopy by Wolfgang Domcke and Hors …
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