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Supersymmetry and stationary solutions in dilaton-axion gravity
Gravity is fixed charged Taub - the NUT steel pipe concrete the construction
2014/12/23
New stationary solutions of four-dimensional dilaton-axion gravity are presented, which correspond to the charged Taub-NUT and Israel-Wilson-Perjés (IWP) solutions of Einstein-Maxwell theory. The char...
Pair creation of dilaton black holes
Theory of gravity time and space dimensions coupling a black hole magnetism
2014/12/23
We consider dilaton gravity theories in four spacetime dimensions parametrized by a constant a, which controls the dilaton coupling, and construct new exact solutions. We first generalize the C metric...
On the Bogomol'nyi bound in Einstein-Maxwell-dilaton gravity
Bogomol'nyi bound Einstein-Maxwell-dilaton gravity
2010/12/21
It has been shown that the Einstein-Maxwell-dilaton theory allows a Bogomol’nyi-type inequality
for an arbitrary dilaton coupling constant , and that the bound is saturated if and only if the
(asym...
Strong gravitational lensing across dilaton anti-de Sitter black hole
anti de Sitter gravitational lensing black holes
2010/3/18
In this work we investigate gravitational lensing effect in strong field region around a dilaton black holes in an anti de Sitter (ADS) space. We also analyse the dependence of the radius of the photo...
Thin-shell wormholes from charged black holes in generalized dilaton-axion gravity
Thin-shell wormholes black holes
2010/3/17
This paper discusses a new type of thin-shell wormhole constructed by applying the cut-and-paste technique to two copies of a charged black hole in generalized dilaton-axion gravity, which was inspire...
Calculation of Quantum Probability in O(2,2) String
Cosmology with a Dilaton Potential
quantum probability O(2 2) string cosmology dilaton potential
2007/8/15
2006Vol.46No.2pp.239-240DOI:
Calculation of Quantum Probability in O(2,2) String
Cosmology with a Dilaton Potential
YAN Jun
Department of Physics, Sichuan Normal Univer...
Thermodynamics of stationary axisymmetric Einstein-Maxwell dilaton-axion black hole
Thermodynamics black hole
2007/7/19
The thermodynamics of a stationary axisymmetric Einstein-Maxwell dilatom-axion (EMDA) black hole is investigated using general statistical physics methods. It is shown that entropy and energy have the...