Intersecting S-Brane Solutions of D = 11 Supergravity (original) (raw)
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Intersecting D-branes in ten and six dimensions
Physical Review D, 1997
We show how, via TTT-duality, intersecting DDD-Brane configurations in ten (six) dimensions can be obtained from the elementary DDD-Brane configurations by embedding a Type IIB DDD-Brane into a Type IIB Nine-Brane (Five-Brane) and give a classification of such configurations. We show that only a very specific subclass of these configurations can be realized as (supersymmetric) solutions to the equations of motion of IIA/IIB supergravity. Whereas the elementary DDD-brane solutions in d=10d=10d=10 are characterized by a single harmonic function, those in d=6d=6d=6 contain two independent harmonic functions and may be viewed as the intersection of two d=10d=10d=10 elementary DDD-branes. Using string/string/string triality in six dimensions we show that the heterotic version of the elementary d=6d=6d=6 DDD-Brane solutions correspond in ten dimensions to intersecting Neveu-Schwarz/Neveu-Schwarz (NS/NS) strings or five-branes and their TTT-duals. We comment on the implications of our results in other than ten and six dimensions.
M-Theory Solutions and Intersecting D-Brane Systems
2011
It is believed that fundamental M-theory in the low-energy limit can be described effectively by D=11 supergravity. Extending our understanding of the different classical brane solutions in M-theory (or string theory) is important, and so there is a lot of interest in finding D=11 M-brane solutions such that after reduction to ten dimensions, they (or some combinations of them) reduce simply to the supersymmetric BPS saturated p-brane solutions. In this thesis, we study and construct M2 and M5-branes solutions in D=11 supergravity. The M-brane solutions are constructed by lifting a D-brane to a four or higher dimensional geometry embedded in M-theory and then placing M-brane solutions in the background geometry. We present new analytic M2 and M5-brane solutions in M-theory based on transverse Gibbons-Hawking and Bianchi spaces. These solutions provide realizations of fully localized type IIA D2/D6 and NS5/D6 brane intersections. One novel feature of these solutions is that the metri...
Physics Letters B, 1996
We present the magnetic duals of Güven's electric-type solutions of D=11 supergravity preserving 1/4 or 1/8 of the D=11 supersymmetry. We interpret the electric solutions as n orthogonal intersecting membranes and the magnetic solutions as n orthogonal intersecting 5-branes, with n = 2, 3; these cases obey the general rule that p-branes can self-intersect on (p − 2)-branes. On reduction to D = 4 these solutions become electric or magnetic dilaton black holes with dilaton coupling constant a = 1 (for n = 2) or a = 1/ √ 3 (for n = 3). We also discuss the reduction to D=10.
Supergravity solutions for harmonic, static and flux S-branes
Journal of High Energy Physics, 2006
We seek S-brane solutions in D = 11 supergravity which can be characterized by a harmonic function H on the flat transverse space. It turns out that the Einstein's equations force H to be a linear function of the transverse coordinates. The codimension one H = 0 hyperplane can be spacelike, timelike or null and the spacelike case reduces to the previously obtained SM2 or SM5 brane solutions. We then consider static S-brane configurations having smeared timelike directions where the transverse Lorentzian symmetry group is broken down to its maximal orthogonal subgroup. Assuming that the metric functions depend on a radial spatial coordinate, we construct explicit solutions in D = 11 supergravity which are non-supersymmetric and asymptotically flat. Finally, we obtain spacelike fluxbrane backgrounds which have timelike electric or magnetic fluxlines extending from past to future infinity.
Supersymmetric intersecting branes in time-dependent backgrounds
Physical Review D, 2006
We construct a family of supersymmetric solutions in time-dependent backgrounds in supergravity theories. One class of the solutions are intersecting brane solutions and another class are brane solutions in pp-wave backgrounds, and their intersection rules are also given. The relation to existing literature is also discussed.
Supersymmetric intersecting branes on the waves
Journal of High Energy Physics, 2010
We construct a general family of supersymmetric solutions in time-and space-dependent wave backgrounds in general supergravity theories describing single and intersecting p-branes embedded into time-dependent dilaton-gravity plane waves of an arbitrary (isotropic) profile, with the brane world-volume aligned parallel to the propagation direction of the wave. We discuss how many degrees of freedom we have in the solutions. We also propose that these solutions can be used to describe higher-dimensional time-dependent "black holes", and discuss their property briefly.
A note on supergravity solutions for partially localized intersecting branes
Physics Letters B, 2004
Using the method developed by Cherkis and Hashimoto we construct partially localized D3 ⊥ D5(2), D4 ⊥ D4(2) and M 5 ⊥ M 5(3) supergravity solutions where one of the harmonic functions is given in an integral form. This is a generalization of the already known near-horizon solutions. The method fails for certain intersections such as D1 ⊥ D5(1) which is consistent with the previous no-go theorems. We point out some possible ways of bypassing these results.
Brane Solutions in Time-Dependent Backgrounds in D = 11 Supergravity and in Type II String Theories
International Journal of Modern Physics A, 2008
We obtain explicit time-dependent brane solutions in M-theory as well as in string theory by solving the reduced equations of motion (which follow, as in Int. J. Mod. Phys. A17, 4647 (2002), from 11-dimensional supergravity) for a class of brane solutions in curved backgrounds. The behavior of our solutions in both asymptotic and near-horizon limits are studied. It is shown that our time-dependent solutions serve as explicit examples of branes in singular, cosmological backgrounds. In some special cases the asymptotic and the boundary AdS solutions can be identified as Milne × Rn space–time.
Journal of High Energy Physics, 2002
We construct supergravity solutions corresponding to space-like branes in string theory. Our approach is to apply the usual solution generating techniques to an appropriate time-dependent solution of the eleven dimensional vacuum Einstein equations. In this way all SDp-brane solutions are obtained, as well as the NS and M-theory space branes. Bound states of SDp/SD(p−2)and SDp/SD(p − 4)-branes are also constructed. Finally, we begin an investigation of the nearbrane regions and singularity structure of these solutions.
Localized Intersections of Non-Extremal p-branes and S-branes
Journal of High Energy Physics, 2004
A class of solutions to Supergravity in 10 or 11 dimensions is presented which extends the non-standard or semi-local intersections of Dp-branes to the case of non-extremal p-branes. The type of non-extremal solutions involved in the intersection is free and we provide two examples involving black-branes and/or D −D systems. After a rotation among the time coordinate and a relatively transverse radial direction the solutions admit the interpretation of an intersection among D-branes and S-branes. We speculate on the relevance of these configurations both to study time dependent phenomena in the AdS/CFT correspondence as well as to construct cosmological brane-world scenarios within String Theory admitting accelerating expansion of the Universe.