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- W3089740103 abstract "Dynamical black-hole scenarios have been developed in loop quantum gravity in various ways, combining results from mini and midisuperspace models. In the past, the underlying geometry of space-time has often been expressed in terms of line elements with metric components that differ from the classical solutions of general relativity, motivated by modified equations of motion and constraints. However, recent results have shown by explicit calculations that most of these constructions violate general covariance and slicing independence. The proposed line elements and black-hole models are therefore ruled out. The only known possibility to escape this sentence is to derive not only modified metric components but also a new space-time structure which is covariant in a generalized sense. Formally, such a derivation is made available by an analysis of the constraints of canonical gravity, which generate deformations of hypersurfaces in space-time, or generalized versions if the constraints are consistently modified. Implications for black holes are described here. [Abbreviated abstract]" @default.
- W3089740103 created "2020-10-08" @default.
- W3089740103 creator A5072848771 @default.
- W3089740103 date "2020-09-28" @default.
- W3089740103 modified "2023-09-27" @default.
- W3089740103 title "Black-hole models in loop quantum gravity" @default.
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