Determinant line bundles revisited

  • Daniel S Freed
  • Published 1995
This note is an addendum to joint work with Xianzhe Dai [DF1], [DF2]. 1 In that paper we investigate the geometric theory of η-invariants of Dirac operators on manifolds with boundary. We summarize the main results below. One key geometric observation is that the exponentiated η-invariant naturally takes values in the determinant line of the boundary. As… (More)