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The D2 Susy Zoo
Dongsu Bak, Nobuyoshi Ohta, Paul K. Townsend
We present new supersymmetric solutions of the Dirac-Born-Infeld equations for time-independent D2-branes, including a 1/2 supersymmetric `dyonic' D2-brane and various 1/4 supersym…
Hamilton-Jacobi method for Domain Walls and Cosmologies
Kostas Skenderis, Paul K. Townsend
We use Hamiltonian methods to study curved domain walls and cosmologies. This leads naturally to first order equations for all domain walls and cosmologies foliated by slices of ma…
Recurrent Acceleration in Dilaton-Axion Cosmology
Julian Sonner, Paul K. Townsend
A class of Einstein-dilaton-axion models is found for which almost all flat expanding homogeneous and isotropic universes undergo recurrent periods of acceleration. We also extend…
Open M5-branes
Eric A. Bergshoeff, Gary W. Gibbons, Paul K. Townsend
We show how, in heterotic M-theory, an M5-brane in the 11-dimensional bulk may end on an ``M9-brane'' boundary, the M5-brane boundary being a Yang monopole 4-brane. This possibilit…
Self-gravitating Yang Monopoles in all Dimensions
G. W. Gibbons, P. K. Townsend
The (2k+2)-dimensional Einstein-Yang-Mills equations for gauge group SO(2k) (or SU(2) for k=2 and SU(3) for k=3) are shown to admit a family of spherically-symmetric magnetic monop…
Hidden supersymmetry of domain walls and cosmologies
Kostas Skenderis, Paul K. Townsend
We show that all domain-wall solutions of gravity coupled to scalar fields for which the worldvolume geometry is Minkowski or anti-de Sitter admit Killing spinors, and satisfy corr…