scholarly journals Supersymmetric near-horizon geometry and Einstein-Cartan-Weyl spaces

2019 ◽  
Vol 793 ◽  
pp. 265-270 ◽  
Author(s):  
Dietmar Silke Klemm ◽  
Lucrezia Ravera
Keyword(s):  
Horizon Geometry ◽  
Weyl Spaces

scholarly journals Einstein–Weyl spaces and near-horizon geometry

2017 ◽  
Vol 34 (4) ◽  
pp. 045009 ◽  
Author(s):  
Maciej Dunajski ◽  
Jan Gutowski ◽  
Wafic Sabra
Keyword(s):  
Horizon Geometry ◽  
Weyl Spaces

scholarly journals Uptunneling to de Sitter

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Mehrdad Mirbabayi
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
False Vacuum ◽  
De Sitter ◽  
Dimensional Theory ◽  
Hole Geometry ◽  
Horizon Geometry ◽  
Two Sides ◽  
Extremal Black Holes

Abstract We propose a Euclidean preparation of an asymptotically AdS2 spacetime that contains an inflating dS2 bubble. The setup can be embedded in a four dimensional theory with a Minkowski vacuum and a false vacuum. AdS2 approximates the near horizon geometry of a two-sided near-extremal Reissner-Nordström black hole, and the two sides can connect to the same Minkowski asymptotics to form a topologically nontrivial worm- hole geometry. Likewise, in the false vacuum the near-horizon geometry of near-extremal black holes is approximately dS2 times 2-sphere. We interpret the Euclidean solution as describing the decay of an excitation inside the wormhole to a false vacuum bubble. The result is an inflating region inside a non-traversable asymptotically Minkowski wormhole.

scholarly journals Lie point symmetries of near-horizon geometry equation

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
E. Buk ◽  
J. Lewandowski ◽  
A. Szereszewski
Keyword(s):  
Lie Point Symmetries ◽  
Horizon Geometry

scholarly journals A Curtis–Hedlund–Lyndon theorem for Besicovitch and Weyl spaces

2009 ◽  
Vol 410 (38-40) ◽  
pp. 3606-3615 ◽  
Author(s):  
Johannes Müller ◽  
Christoph Spandl
Keyword(s):  
Weyl Spaces

scholarly journals Harmonic morphisms between Weyl spaces and twistorial maps

2006 ◽  
Vol 14 (5) ◽  
pp. 847-881 ◽  
Author(s):  
Eric Loubeau ◽  
Radu Pantilie
Keyword(s):  
Harmonic Morphisms ◽  
Weyl Spaces

scholarly journals AdS3 GRAVITATIONAL INSTANTONS FROM CONFORMAL FIELD THEORY

1999 ◽  
Vol 14 (28) ◽  
pp. 1961-1981 ◽  
Author(s):  
SHUHEI MANO
Keyword(s):  
Field Theory ◽  
Conformal Field Theory ◽  
Bound States ◽  
Three Dimensional ◽  
Partition Functions ◽  
De Sitter ◽  
Btz Black Hole ◽  
Gravitational Instantons ◽  
Conformal Field ◽  
Horizon Geometry

A conformal field theory on the boundary of three-dimensional asymptotic anti-de Sitter spaces which appear as near horizon geometry of D-brane bound states is discussed. It is shown that partition functions of gravitational instantons appear as high and low temperature limits of the partition function of the conformal field theory. The result reproduces phase transition between the anti-de Sitter space and the BTZ black hole in the bulk gravity.

scholarly journals ON THE CFT DUALS FOR NEAR-EXTREMAL BLACK HOLES

2011 ◽  
Vol 26 (22) ◽  
pp. 1601-1611 ◽  
Author(s):  
JØRGEN RASMUSSEN
Keyword(s):  
Field Theory ◽  
Black Holes ◽  
Black Hole ◽  
Conformal Field Theory ◽  
Two Dimensional ◽  
Conformal Field ◽  
Horizon Geometry ◽  
Cardy Formula ◽  
Asymptotic Symmetries ◽  
Extremal Black Holes

We consider Kerr–Newman–AdS–dS black holes near extremality and work out the near-horizon geometry of these near-extremal black holes. We identify the exact U (1)L× U (1)R isometries of the near-horizon geometry and provide boundary conditions enhancing them to a pair of commuting Virasoro algebras. The conserved charges of the corresponding asymptotic symmetries are found to be well-defined and nonvanishing and to yield central charges cL≠0 and cR = 0. The Cardy formula subsequently reproduces the Bekenstein–Hawking entropy of the black hole. This suggests that the near-extremal Kerr–Newman–AdS–dS black hole is holographically dual to a non-chiral two-dimensional conformal field theory.

WEYL SPACES OF COMPOSITIONS OF SIX BASIC MANIFOLDS

2021 ◽  
Vol 10 (10) ◽  
pp. 3337-3347
Author(s):  
M. Ajeti ◽  
M. Teofilova ◽  
G. Zlatanov
Keyword(s):  
Covariant Differentiation ◽  
Weyl Spaces ◽  
Riemannian Spaces

By help of prolonged covariant differentiation, Cartesian compositions of six basic manifolds are studied. Weyl spaces of such compositions are characterized. Eleven-dimensional Riemannian spaces containing compositions of six basic manifolds are also considered.

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