|Topic:||Smectic Topology, Tomography, and Topography|
|Affiliation:||University of Pennsylvania and Member, School of Mathematics|
|Date:||Monday, November 2|
|Time/Room:||2:00pm - 3:00pm/S-101|
Smectic liquid crystals correspond to certain foliations of Euclidean space. I will discuss the topology of defects in the smectics. Typically the index of these topological defects is characterized via the fundamental group of the manifold of ground states. I will review this approach and present a new formulation of the classification of defects which avoids inconsistencies in the traditional homotopy approach. No background necessary!