Learn about the collapse of Landau levels in radial geometry and nanostrips in this 29-minute scientific seminar talk presented by S.G. Sharapov from the Bogolyubov Institute for Theoretical Physics at the National Academy of Sciences of Ukraine. Delivered as part of the scientific seminar series in memory of Petro Ivanovich Fomin on "Quantum Field Theory and Cosmology" on July 4, 2023, explore theoretical physics concepts focusing on quantum phenomena in confined geometries.