Octupolar order in two dimensions
arXiv:1503.04595 · doi:10.1140/epje/i2015-15063-x
Abstract
Octupolar order is described in two space dimensions in terms of the maxima (and conjugated minima) of the probability density associated with a third-rank, fully symmetric and traceless tensor. Such a representation is shown to be equivalent to diagonalizing the relevant third-rank tensor, an equivalence which however is only valid in the two-dimensional case.