Finitary Spacetime Sheaves of Quantum Causal Sets: Curving Quantum Causality

Details Finitary Spacetime Sheaves of Quantum Causal Sets: Curving Quantum Causality Finitary Spacetime Sheaves of Quantum Causal Sets: Curving Quantum Causality

2001-02-22

arxiv.org/abs/gr-qc/0102097v1

Int.J.Theor.Phys. 40 (2001) 1885-1928

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

This is a shortened version of the abstract. The paper is submitted to the International Journal of Theoretical Physics

Scientific paper

A locally finite, causal and quantal substitute for a locally Minkowskian principal fiber bundle $\cal{P}$ of modules of Cartan differential forms $\omg$ over a bounded region $X$ of a curved $C^{\infty}$-smooth differential manifold spacetime $M$ with structure group ${\bf G}$ that of orthochronous Lorentz transformations $L^{+}:=SO(1,3)^{\uparrow}$, is presented. ${\cal{P}}$ is the structure on which classical Lorentzian gravity, regarded as a Yang-Mills type of gauge theory of a $sl(2,\com)$-valued connection 1-form $\cal{A}$, is usually formulated. The mathematical structure employed to model this replacement of ${\cal{P}}$ is a principal finitary spacetime sheaf $\vec{\cal{P}}_{n}$ of quantum causal sets $\amg_{n}$ with structure group ${\bf G}_{n}$, which is a finitary version of the group ${\bf G}$ of local symmetries of General Relativity, and a finitary Lie algebra ${\bf g}_{n}$-valued connection 1-form ${\cal{A}}_{n}$ on it, which is a section of its sub-sheaf $\amg^{1}_{n}$. ${\cal{A}}_{n}$ is physically interpreted as the dynamical field of a locally finite quantum causality, while its associated curvature ${\cal{F}}_{n}$, as some sort of `finitary Lorentzian quantum gravity.

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