Euclidean Supergravity in Terms of Dirac Eigenvalues

Details Euclidean Supergravity in Terms of Dirac Eigenvalues Euclidean Supergravity in Terms of Dirac Eigenvalues

1997-10-30

arxiv.org/abs/gr-qc/9710132v3

Phys.Rev. D58 (1998) 045005

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Misprints and formulae corrected; to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.58.045005

It has been recently shown that the eigenvalues of the Dirac operator can be considered as dynamical variables of Euclidean gravity. The purpose of this paper is to explore the possiblity that the eigenvalues of the Dirac operator might play the same role in the case of supergravity. It is shown that for this purpose some primary constraints on covariant phase space as well as secondary constraints on the eigenspinors must be imposed. The validity of primary constraints under covariant transport is further analyzed. It is show that in the this case restrictions on the tanget bundle and on the spinor bundle of spacetime arise. The form of these restrictions is determined under some simplifying assumptions. It is also shown that manifolds with flat curvature of tangent bundle and spinor bundle and spinor bundle satisfy these restrictons and thus they support the Dirac eigenvalues as global observables.

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