Spectral Asymmetry, Zeta Functions and the Noncommutative Residue
Abstract
Description
In this paper we study the spectral asymmetry of (possibly nonselfadjoint) elliptic PsiDO's in terms of the difference of zeta functions coming from different cuttings. Refining previous formulas of Wodzicki in the case of odd class elliptic PsiDO's, our main results have several consequence concerning the local independence with respect to the cutting, the regularity at integer points of eta functions and a geometric expression for the spectral asymmetry of Dirac operators which, in particular, yields a new spectral interpretation of the Einstein-Hilbert action in gravity.
v8: final version. To appear in Int. Math. J., 22 pages
v8: final version. To appear in Int. Math. J., 22 pages