Witten spinors on nonspin manifolds
arXiv:1112.0194 · doi:10.1007/s00220-013-1804-0
Abstract
Motivated by Witten's spinor proof of the positive mass theorem, we analyze asymptotically constant harmonic spinors on complete asymptotically flat nonspin manifolds with nonnegative scalar curvature.
revised version; aceepted in Communications in Mathematical Physics