6 papers
The Hyperboloidal and Spacetime Positive Mass Theorem in All Dimensions
Sven Hirsch, Marcus Khuri, Martin Lesourd +1
Using the recent work of Brendle--Wang on the Riemannian positive mass theorem, we prove the spacetime positive mass theorem for asymptotically flat and asymptotically hyperboloida…
The Spacetime Positive Mass Theorem with Multiple Time Dimensions
Sven Hirsch, Alec Payne, Yiyue Zhang
We generalize the spacetime positive mass theorem to include multiple time dimensions. In particular, we show that the mass remains nonnegative in the sense that the energy is…
Causal character of imaginary Killing spinors and spinorial slicings
Sven Hirsch, Yiyue Zhang
We characterize spin initial data sets that saturate the BPS bound in the asymptotically AdS setting. This includes both gravitational waves and rotating black holes in higher dime…
Rigidity of Asymptotically Hyperboloidal Initial Data Sets with Vanishing Mass
Sven Hirsch, Hyun Chul Jang, Yiyue Zhang
In Special Relativity, massless objects are characterized as either vacuum states or as radiation propagating at the speed of light. This distinction extends to General Relativity…
Initial data sets with vanishing mass are contained in pp-wave spacetimes
Sven Hirsch, Yiyue Zhang
In 1981, Schoen-Yau and Witten showed that in General Relativity both the total energy and the total mass of an initial data set modeling an isolated gravitational system a…
Stability of Llarull's theorem in all dimensions
Sven Hirsch, Yiyue Zhang
Llarull's theorem characterizes the round sphere among all spin manifolds whose scalar curvature is bounded from below by . In this paper we show that if the scalar c…