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Abstract Cosmological Black Holes as Models of Cosmological Inhomogeneities
, 2006
"... Since cosmological black holes modify the density and pressure of the surrounding universe, and introduce heat conduction, they produce simple models of cosmological inhomogeneities that can be used to study the eect of inhomogeneities on the universe's expansion. In this thesis, new cosmologi ..."
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cosmological black hole solutions are obtained by generalizing the expanding KerrSchild cosmological black holes to obtain the charged case, by performing a KerrSchild transformation of the Einsteinde Sitter universe (instead of a closed universe) to obtain nonexpanding KerrSchild cosmological black
Gordon and Kerr–Schild ansätze in massive and bimetric gravity
, 2012
"... We develop the “generalized Gordon ansatz” for the ghostfree versions of both massive and bimetric gravity, an ansatz which is general enough to include almost all spacetimes commonly considered to be physically interesting, and restricted enough to greatly simplify calculations. The ansatz allows ..."
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Cited by 8 (0 self)
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– Schild ansatz ” can also be easily considered, now leading to an effective stressenergy tensor that corresponds to a null fluid. Cosmological implications are considered, as are consequences for black hole physics. Finally we have a few words to say concerning the null energy condition in the framework
Higher dimensional KerrSchild spacetimes
"... We investigate general properties of KerrSchild (KS) metrics in n> 4 spacetime dimensions. First, we show that the Weyl tensor is of type II or more special if the null KS vector k is geodetic (or, equivalently, if Tabk a k b = 0). We subsequently specialize to vacuum KS solutions, which natural ..."
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Cited by 16 (10 self)
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We investigate general properties of KerrSchild (KS) metrics in n> 4 spacetime dimensions. First, we show that the Weyl tensor is of type II or more special if the null KS vector k is geodetic (or, equivalently, if Tabk a k b = 0). We subsequently specialize to vacuum KS solutions, which
Regular Sources of the KerrSchild Class for Rotating and Nonrotating
 Black Hole Solutions ”, Phys. Rev.D65 (2002)064039, grqc/0109085
"... A unified approach to regular interiors of black holes with smooth matter distributions in the core region is given. The approach is based on a class of KerrSchild metrics representing minimal deformations of the KerrNewman solution, and allows us to give a common treatment for (charged and unchar ..."
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Cited by 7 (3 self)
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A unified approach to regular interiors of black holes with smooth matter distributions in the core region is given. The approach is based on a class of KerrSchild metrics representing minimal deformations of the KerrNewman solution, and allows us to give a common treatment for (charged
Black hole data via a KerrSchild approach”, Phys
 Rev. D
, 1998
"... We present a new approach for setting initial Cauchy data for multiple black hole spacetimes. The method is based upon adopting an initially KerrSchild form of the metric. In the case of nonspinning holes, the constraint equations take a simple hierarchical form which is amenable to direct numeric ..."
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Cited by 2 (0 self)
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We present a new approach for setting initial Cauchy data for multiple black hole spacetimes. The method is based upon adopting an initially KerrSchild form of the metric. In the case of nonspinning holes, the constraint equations take a simple hierarchical form which is amenable to direct
Twisting Lightlike Solutions of the KerrSchild Class
, 2000
"... Using a complex representation of the Debney–Kerr–Schild (DKS) solutions and the Kerr theorem we give a method to construct boosted Kerr geometries. In the ultrarelativistic case this method yelds twisting solutions having, contrary to the known ppwave limiting solutions, a nonzero value of the to ..."
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Using a complex representation of the Debney–Kerr–Schild (DKS) solutions and the Kerr theorem we give a method to construct boosted Kerr geometries. In the ultrarelativistic case this method yelds twisting solutions having, contrary to the known ppwave limiting solutions, a nonzero value
KerrSchild Method and Geodesic Structure in Codimension2 Brane Black Holes
"... We consider the black hole solutions of fivedimensional gravity with a GaussBonnet term in the bulk and an induced gravity term on a 2brane of codimension2. Applying the KerrSchild method we derive additional solutions which include charge and angular momentum. To improve our understanding of ..."
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We consider the black hole solutions of fivedimensional gravity with a GaussBonnet term in the bulk and an induced gravity term on a 2brane of codimension2. Applying the KerrSchild method we derive additional solutions which include charge and angular momentum. To improve our understanding
INTEGRAL EQUATIONS, KERR–SCHILD FIELDS AND GRAVITATIONAL SOURCES
, 2004
"... Kerr–Schild solutions to the vacuum Einstein equations are considered from the viewpoint of integral equations. We show that, for a class of Kerr–Schild fields, the stressenergy tensor can be regarded as a total divergence in Minkowski spacetime. If one assumes that Minkowski coordinates cover the ..."
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Cited by 2 (0 self)
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Kerr–Schild solutions to the vacuum Einstein equations are considered from the viewpoint of integral equations. We show that, for a class of Kerr–Schild fields, the stressenergy tensor can be regarded as a total divergence in Minkowski spacetime. If one assumes that Minkowski coordinates cover
Quantum Gravity
, 2004
"... We describe the basic assumptions and key results of loop quantum gravity, which is a background independent approach to quantum gravity. The emphasis is on the basic physical principles and how one deduces predictions from them, at a level suitable for physicists in other areas such as string theor ..."
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Cited by 572 (11 self)
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integral quantizations, coupling to matter, extensions to supergravity and higher dimensional theories, as well as applications to black holes, cosmology and Plank scale phenomenology. We describe the near term prospects for observational tests of quantum theories of gravity and the expectations that loop
Twistor String Structure of the KerrSchild Geometry and Consistency of the DiracKerr System. ∗
, 812
"... KerrSchild (KS) geometry of the rotating blackholes and spinning particles is based on the associated with Kerr theorem twistor structure which is defined by an analytic curve F(Z) = 0 in the projective twistor space Z ∈ CP 3. On the other hand, there is a complex Newman representation which desc ..."
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KerrSchild (KS) geometry of the rotating blackholes and spinning particles is based on the associated with Kerr theorem twistor structure which is defined by an analytic curve F(Z) = 0 in the projective twistor space Z ∈ CP 3. On the other hand, there is a complex Newman representation which
Results 1  10
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1,665