Jongmin Han (Kyung Hee University)
Email: jmhan@khu.ac.kr
Title: Solution structures for the self-dual equations of the Einstein-Maxwell-Higgs model on
compact surfaces
Abstract:
In this talk, we consider the self-dual equations arising from the
Einstein-Maxwell-Higgs model on compact surfaces. According to the behaviors of solutions as
the coupling parameter $\epsilon$ decreases to zero, we classify solutions into two categories:
topological solutions and nontopological solutions. In this talk, we review recent advances for
the exsitence of solutions for both types. First, we show that there exists $\epsilon_0$ such that there are
at least two solutions $v_{1,\epsilon}$ and $v_{2,\epsilon}$ for $\epsilon \in (0,\epsilon_0)$ and no solutions for $\epsilon > \epsilon_0$. It turns out that $v_{1,\epsilon}$
is topological for small $\epsilon$. Second, we present the existence of nontopological solutions for all
small $\epsilon$ via a degree argument.