
Bohr–Mottelson theorem
The Bohr–Mottelson theorem is a fundamental concept in nuclear physics that describes the behavior of atomic nuclei. It asserts that the nucleus can be understood as a system of moving protons and neutrons, akin to a collection of coupled oscillators. This means that these particles can vibrate and rotate in complex ways, which influences the energy levels of the nucleus. The theorem helps explain phenomena such as nuclear excitations and the formation of different nuclear shapes, thereby providing insights into the fundamental structure and dynamics of matter at the atomic level.