Two-dimensional inversion symmetry as the fundamental symmetry of incompressible quantum Hall fluids
arXiv:2302.10968
Abstract
Two dimensional inversion symmetry ( rotations in the ``Hall plane'' that hosts the incompressible electron fluid that exhibits the quantized Hall effect) is identified as its fundamental unbroken symmetry. A consequence is that the integers and which define both the Landau level filling factor = and the elementary fractional charge of topological excitations, cannot have a common divisor greater than 2.
4 pages