938 research outputs found
Quantum Extension of the Kruskal Space-time
A new description of macroscopic Kruskal black holes that incorporates the
quantum geometry corrections of loop quantum gravity is presented. It
encompasses both the `interior' region that contains classical singularities
and the `exterior' asymptotic region. Singularities are naturally resolved by
the quantum geometry effects of loop quantum gravity. The resulting quantum
extension of space-time has the following features: (i) It admits an infinite
number of trapped, anti-trapped and asymptotic regions; (ii) All curvature
scalars have uniform (i.e., mass independent) upper bounds; (iii) In the large
mass limit, all asymptotic regions of the extension have the same ADM mass;
(iv) In the low curvature region (e.g., near horizons) quantum effects are
negligible, as one would physically expect; and (v) Final results are
insensitive to the fiducial structures that have to be introduced to construct
the classical phase space description (as they must be). Previous effective
theories [1-10] shared some but not all of these features. We compare and
contrast our results with those of these effective theories and also with
expectations based on the AdS/CFT conjecture [11]. We conclude with a
discussion of limitations of our framework, especially for the analysis of
evaporating black holes.Comment: 47 pages, 5 figures, A short addendum is added after the last section
to address misleading remarks in a recent pre-print [50] that may confuse the
reade
Quantum Transfiguration of Kruskal Black Holes
We present a new effective description of macroscopic Kruskal black holes
that incorporates corrections due to quantum geometry effects of loop quantum
gravity. It encompasses both the `interior' region that contains classical
singularities and the `exterior' asymptotic region. Singularities are naturally
resolved by the quantum geometry effects of loop quantum gravity, and the
resulting quantum extension of the full Kruskal space-time is free of all the
known limitations of previous investigations [1-11] of the Schwarzschild
interior. We compare and contrast our results with these investigations and
also with the expectations based on the AdS/CFT duality [12].Comment: 5 pages, 1 figure, minor changes, version to appear in PR
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