Topological Solitons in Gravity

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Online only
Pierre Heidmann (Ohio State University)

I will discuss new degrees of freedom of gravity as motivated by string theory. Although they are expected to be generically quantum mechanical, classes of such states are coherent enough to admit classical descriptions in Einstein gravity. I will explain how to describe them as novel ultra-compact geometries without horizon or singularity. These solitons of spacetime are referred to as Topological Solitons. I will discuss their potential role in quantum gravity to resolve astrophysical black holes. Furthermore, in light of the emerging field of black hole astronomy, we will see how they can provide an interesting experimental window into the quantum aspects of gravity.