1,081 research outputs found
Topology Changing Process of Coalescing Black Holes on Eguchi-Hanson Space
We numerically study the event horizons of two kinds of five-dimensional
coalescing black hole solutions with different asymptotic structures: the
five-dimensional Kastor-Traschen solution (5DKT) and the coalescing black hole
solution on Eguchi-Hanson space (CBEH). Topologies of the spatial infinity are
and , respectively. We show that
the crease sets of event horizons are topologically in 5DKT and
in CBEH, respectively. If we choose the time slices
which respect space-time symmetry, the first contact points of the coalescing
process is a point in the 5DKT case but a in the CBEH case. We also
find that in CBEH, time slices can be chosen so that a black ring with topology can be also formed during a certain intermediate
period unlike the 5DKT.Comment: 13 pages, 17 figure
Charged Rotating Kaluza-Klein Black Holes Generated by G2(2) Transformation
Applying the G_{2(2)} generating technique for minimal D=5 supergravity to
the Rasheed black hole solution, we present a new rotating charged Kaluza-Klein
black hole solution to the five-dimensional Einstein-Maxwell-Chern-Simons
equations. At infinity, our solution behaves as a four-dimensional flat
spacetime with a compact extra dimension and hence describes a Kaluza-Klein
black hole. In particlar, the extreme solution is non-supersymmetric, which is
contrast to a static case. Our solution has the limits to the asymptotically
flat charged rotating black hole solution and a new charged rotating black
string solution.Comment: 24 page
Wave-vector and polarization dependence of conical refraction
We experimentally address the wave-vector and polarization dependence of the
internal conical refraction phenomenon by demonstrating that an input light
beam of elliptical transverse profile refracts into two beams after passing
along one of the optic axes of a biaxial crystal, i.e. it exhibits double
refraction instead of refracting conically. Such double refraction is
investigated by the independent rotation of a linear polarizer and a
cylindrical lens. Expressions to describe the position and the intensity
pattern of the refracted beams are presented and applied to predict the
intensity pattern for an axicon beam propagating along the optic axis of a
biaxial crystal
Rotating Black Holes on Kaluza-Klein Bubbles
Using the solitonic solution generating techniques, we generate a new exact
solution which describes a pair of rotating black holes on a Kaluza-Klein
bubble as a vacuum solution in the five-dimensional Kaluza-Klein theory. We
also investigate the properties of this solution. Two black holes with topology
S^3 are rotating along the same direction and the bubble plays a role in
holding two black holes. In static case, it coincides with the solution found
by Elvang and Horowitz.Comment: 16 pages, 1 figure, minor correctio
Vacuum solutions of five dimensional Einstein equations generated by inverse scattering method
We study stationary and axially symmetric two solitonic solutions of five
dimensional vacuum Einstein equations by using the inverse scattering method
developed by Belinski and Zakharov. In this generation of the solutions, we use
five dimensional Minkowski spacetime as a seed. It is shown that if we restrict
ourselves to the case of one angular momentum component, the generated solution
coincides with a black ring solution with a rotating two sphere which was found
by Mishima and Iguchi recently.Comment: 10 pages, accepted for publication in Physical Review
Nonlinear resonance interaction of ultrasonic waves under applied stress
Copyright 1984 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics, 56(1), 235-237, 1984 and may be found at http://dx.doi.org/10.1063/1.33375
Relationship Between Solitonic Solutions of Five-Dimensional Einstein Equations
We give the relation between the solutions generated by the inverse
scattering method and the B\"acklund transformation applied to the vacuum
five-dimensional Einstein equations. In particular, we show that the
two-solitonic solutions generated from an arbitrary diagonal seed by the
B\"acklund transformation are contained within those generated from the same
seed by the inverse scattering method.Comment: 17 pages, Some references are added, to be published in Phys.Rev.
Topology Change of Coalescing Black Holes on Eguchi-Hanson Space
We construct multi-black hole solutions in the five-dimensional
Einstein-Maxwell theory with a positive cosmological constant on the
Eguchi-Hanson space, which is an asymptotically locally Euclidean space. The
solutions describe the physical process such that two black holes with the
topology of S^3 coalesce into a single black hole with the topology of the lens
space L(2;1)=S^3/Z_2. We discuss how the area of the single black hole after
the coalescence depends on the topology of the horizon.Comment: 10 pages, Some comments are added. to be published as a letter in
Classical and Quantum Gravit
Boundary Value Problem for Black Rings
We study the boundary value problem for asymptotically flat stationary black
ring solutions to the five-dimensional vacuum Einstein equations. Assuming the
existence of two additional commuting axial Killing vector fields and the
horizon topology of , we show that the only asymptotically flat
black ring solution with a regular horizon is the Pomeransky-Sen'kov black ring
solution.Comment: 21 pages, 1 figur
Super-Gaussian conical refraction beam
We demonstrate the transformation of Gaussian input beams into super-Gaussian beams with a quasi flat-top transverse profile by means of the conical refraction phenomenon by adjusting the ratio between the ring radius and the waist radius of the input beam to 0.445. We discuss the beam propagation of the super-Gaussian beam and show that it has a confocal parameter three times larger than the one that would be obtained from a Gaussian beam. The experiments performed with a KGd(WO4)2 biaxial crystal are in good agreement with the theoretical predictions
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