Some New Exact Solutions in Einstein-Maxwell Theory

Abstract

I construct several new exact solutions in Einstein-Maxwell theory with a focus on embedding Nutku helicoid-catenoid instantons in 5 and higher dimensions. Using the Nutku helicoid instanton, I also construct convoluted-like solutions in 6 and higher dimensional Einstein-Maxwell theory. These Nutku-embedded solutions may be interpreted as wormhole handles. I also construct similar solutions through an embedding of the Eguchi-Hanson instanton in higher dimensions. Additionally, I derive two new gravitational instantons using the general Nutku metric. Lastly, I construct a spacetime in which the electric and gravitational field strengths are shown to be determined by the same parameter, i.e. mass alone.