gerbes;
determinant bundles;
Hamiltonian quantization;
index theory;
D O I:
10.1023/A:1014456501506
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
We clarify the relation between the Dixmier-Douady class on the space of self-adjoint Fredholm operators ("universal B-field") and the curvature of determinant bundles over infinite-dimensional Grassmannians. In particular, in the case of Dirac type operators on a three dimensional compact manifold we obtain a simple and explicit expression for both forms.