Spinning Up Asymptotically Flat Spacetimes
E.N. Glass, J.P. Krisch
TL;DR
This paper introduces a new method for constructing stationary, asymptotically flat rotating solutions to Einstein's equations, including a unique solution with a quasilocal mass but no global mass, featuring an ergosphere without an event horizon.
Contribution
It presents a novel approach to generating rotating solutions with specific properties, such as a rotating string-fluid interpretation and solutions with ergospheres but no horizons.
Findings
A solution with quasilocal mass but no global mass.
Existence of an ergosphere without an event horizon.
Energy-momentum interpreted as rotating string-fluid.
Abstract
We present a method for constructing stationary, asymptotically flat, rotating solutions of Einstein's field equations. One of the spun-up solutions has quasilocal mass but no global mass. It has an ergosphere but no event horizon. The angular momentum is constant everywhere beyond the ergosphere. The energy-momentum content of this solution can be interpreted as a rotating string-fluid.
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