230 research outputs found
Spherically Symmetric solutions in Multidimensional Gravity with the SU(2) Gauge Group as the Extra Dimensions
The multidimensional gravity on the principal bundle with the SU(2) gauge
group is considered. The numerical investigation of the spherically symmetric
metrics with the center of symmetry is made. The solution of the gravitational
equations depends on the boundary conditions of the ``SU(2) gauge potential''
(off-diagonal metric components) at the symmetry center and on the type of
symmetry (symmetrical or antisymmetrical) of these potentials. In the chosen
range of the boundary conditions it is shown that there are two types of
solutions: wormhole-like and flux tube. The physical application of such kind
of solutions as quantum handles in a spacetime foam is discussed.Comment: misprints are correcte
Experimental test for 5th dimension in Kaluza-Klein gravity
Several electric/magnetic charged solutions (dyons) to 5D Kaluza-Klein
gravity on the principal bundle are reviewed. Here we examine the possibility
that these solutions can act as quantum virtual wormholes in spacetime foam
models. By applying a sufficently large, external electric and/or magnetic
field it may be possible to ``inflate'' these solutions from a quantum to a
classical state. This effect could lead to a possible experimental signal for
higher dimensions in multidimensional gravity.Comment: 4 pages, 4 figures, Talk given at the Third Meeting on Constrained
Dynamics and Quantum Gravity, Villasimius (Sardinia), September 13-17, 199
Duality between magnetic field and rotation
It is shown that in 5D Kaluza-Klein theory there are everywhere regular
wormhole-like solutions in which the magnetic field at the center is the origin
of a rotation on the peripheral part of these solutions. The time on the
peripheral part is topologically non-trivial and magnetic field is suppressed
in comparison with the electric one.Comment: discussion about closed time-like curves is adde
Electric/magnetic flux tube on the background of magnetic/electric field
It is argued that the phenomenon of a flux tube in quantum chromodynamics is
closely connected with a spontaneously symmetry breakdown of gauge theory. It
is shown that in the presence of a mass term in the SU(2) gauge theory the
Nielsen-Olesen equations describe the flux tube surrounded by an external
field.Comment: unessential changes in the tex
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