8 research outputs found
Spacetime scale-invariance and the super p-brane
We generalize to p-dimensional extended objects and type II superstrings a
recently proposed Green-Schwarz type I superstring action in which the tension
emerges as an integration constant of the equations of motion. The action
is spacetime scale-invariant but its equations of motion are equivalent to
those of the standard super p-brane for and the null super p-brane for
. We also show that for the action can be written in ``Born-Infeld''
form.Comment: 14 pages (LATEX), UG-3/9
Non-Abelian, Self-Dual Chern-Simons Vortices Coupled to Gravity
In this article we consider Chern-Simons/Higgs theory coupled to
gravity in three-dimensions. It is shown that for a cylindrically symmetric
vortex both the Einstein equations and the field equations can be reduced to a
set of first-order Bogomol'nyi equations provided that we choose a specific
eighth-order potential.Comment: 21 pages, LATEX, no figure
Gravitating Chern-Simons vortices
The construction of self-dual vortex solutions to the Chern-Simons-Higgs
model (with a suitable eighth-order potential) coupled to Einstein gravity in
(2 + 1) dimensions is reconsidered. We show that the self-duality condition may
be derived from the sole assumption . Next, we derive a family of
exact, doubly self-dual vortex solutions, which interpolate between the
symmetrical and asymmetrical vacua. The corresponding spacetimes have two
regions at spatial infinity. The eighth-order Higgs potential is positive
definite, and closed timelike curves are absent, if the gravitational constant
is chosen to be negative.Comment: 11 pages, LaTe
Supersymmetric Self-Gravitating Solitons
We show that the `instantonic' soliton of five-dimensional Yang-Mills theory
and the closely related BPS monopole of four-dimensional Yang-Mills/Higgs
theory continue to be exact static, and stable, solutions of these field
theories even after the inclusion of gravitational, electromagnetic and, in the
four-dimensional case, dilatonic interactions, provided that certain
non-minimal interactions are included. With the inclusion of these
interactions, which would be required by supersymmetry, these exact
self-gravitating solitons saturate a gravitational version of the Bogomol'nyi
bound on the energy of an arbitrary field configuration.Comment: 39 pages, DAMTP R-93/27, phyzz
Chern-Simons Vortices in Supergravity
We study supersymmetric vortex solutions in three-dimensional abelian gauged
supergravity. First, we construct the general U(1)-gauged D=3, N=2 supergravity
whose scalar sector is an arbitrary Kahler manifold with U(1) isometry. This
construction clarifies the connection between local supersymmetry and the
specific forms of some scalar potentials previously found in the literature --
in particular, it provides the locally supersymmetric embedding of the abelian
Chern-Simons Higgs model. We show that the Killing spinor equations admit
rotationally symmetric vortex solutions with asymptotically conical geometry
which preserve half of the supersymmetry.Comment: 26 pages, LaTeX2
Charged AdS Black Holes and Catastrophic Holography
We compute the properties of a class of charged black holes in anti-de Sitter
space-time, in diverse dimensions. These black holes are solutions of
consistent Einstein-Maxwell truncations of gauged supergravities, which are
shown to arise from the inclusion of rotation in the transverse space. We
uncover rich thermodynamic phase structures for these systems, which display
classic critical phenomena, including structures isomorphic to the van der
Waals-Maxwell liquid-gas system. In that case, the phases are controlled by the
universal `cusp' and `swallowtail' shapes familiar from catastrophe theory. All
of the thermodynamics is consistent with field theory interpretations via
holography, where the dual field theories can sometimes be found on the world
volumes of coincident rotating branes.Comment: 19 pages, revtex, psfig, 6 multicomponent figures, typos, references
and a few remarks have been repaired, and adde
The molecular genetics of race 2 specificity in Pseudomonas syringae pathovar pisi
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