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- W2070487941 abstract "The null-surface formulation of general relativity -- recently introduced -- provides novel tools for describing the gravitational field, as well as a fresh physical way of viewing it. The new formulation provides ``local'' observables corresponding to the coordinates of points --- which constitute the spacetime manifold --- in a {em geometrically defined chart/}, as well as non-local observables corresponding to lightcone cuts and lightcones. In the quantum theory, the spacetime point observables become operators and the spacetime manifold itself becomes ``quantized'', or ``fuzzy''. This novel view may shed light on some of the interpretational problems of a quantum theory of gravity. Indeed, as we discuss briefly, the null-surface formulation of general relativity provides (local) geometrical quantities --- the spacetime point observables --- which are candidates for the long-sought physical operators of the quantum theory." @default.
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- W2070487941 date "1997-01-01" @default.
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- W2070487941 title "Fuzzy spacetime from a null-surface version of general relativity" @default.
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- W2070487941 doi "https://doi.org/10.1088/0264-9381/14/1a/012" @default.
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