On the geometrized Skyrme and Faddeev models

Steady Euler flows and the Faddeev-Skyrme model with mass term

We point out a duality between steady incompressible Euler flows and solutions of the strongly coupled Faddeev-Skyrme sigma model with potential (mass) term. We supplement this result with various applications and several explicit examples.

三维球面上的稳态欧拉流及其关联的Faddeev-Skyrme解

A steady Euler flow on the 3-sphere and its associated Faddeev-Skyrme solution

本文构造了三维球面上具有两个独立首次积分且与到二维球面的近浸没纤维相切的稳态欧拉流，并证明该浸没是带标准势的四次Faddeev-Skyrme模型的临界点。

Supercurrent coupling in the Faddeev-Skyrme model

Motivated by the sigma model limit of multicomponent Ginzburg-Landau theory, a version of the Faddeev-Skyrme model is considered in which the scalar field is coupled dynamically to a one-form field called the supercurrent. This coupled model is investigated in the general setting where physical space is an oriented Riemannian manifold and the target space is a Kaehler manifold. It is shown that supercurrent coupling destroys the topological stability enjoyed by the usual Faddeev-Skyrme model, so that there can be no globally stable knot solitons in this model. Nonetheless, local energy minimiz…

Homogeneous spaces and Faddeev-Skyrme models

We study geometric variational problems for a class of effective models in quantum field theory known as Faddeev-Skyrme models. Mathematically one considers minimizing an energy functional on homotopy classes of maps from closed 3-manifolds into homogeneous spaces of compact Lie groups. The energy minimizers known as Hopfions describe stable configurations of subatomic particles such as protons and their strong interactions. In particular, we introduce novel Sobolev spaces suitable for our variational problem and develop the notion of homotopy type for maps in such spaces that generalizes homo…