Regularized Algebraic Nets for General Covariant QFT on Differentiable Manifolds

Details Regularized Algebraic Nets for General Covariant QFT on Differentiable Manifolds Regularized Algebraic Nets for General Covariant QFT on Differentiable Manifolds

1997-05-30

arxiv.org/abs/gr-qc/9705084v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, LaTeX, rejected by Class. Quant. Grav., revised

Scientific paper

Quantum general relativity may be considered as generally covariant QFT on differentiable manifolds, without any a priori metric structure. The kinematically covariance group acts by general diffeomorphisms on the manifold and by automorphisms on the isotonic net of *-algebras encoding the QFT, while the algebra of observables is covariant under the dynamical subgroup of the general diffeomorphism group. Here, I focus on an algebraic implementation of the dynamical subgroup of dilations. Introducing an small and large scale cutoffs algebraically, their usual a priori conflict with general covariance is avoided. Thereby, a commutant duality between the minimal and maximal algebra is proposed. This allows to extract the modular structure, which is again related to the dilations.

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