Distortional Lifshitz Vectors and Helicity in Nematic Free Energy Density
arXiv:1207.2918 · doi:10.18483/ijSci.211
Abstract
Here we discuss the free energy of nematic liquid crystals using two vectors and the helicity, with the aim of having a compact form of its density. The two vectors are due to the splay and bend distortions of the director field. They have a polar nature, whereas the helicity is a pseudoscalar.
Nematics, Liquid Crystals, Free energy density, Lifshitz invariants, Corrected typos