Comments on Supergravity Description of S-branes

Abstract

This is a note on the coupled supergravity-tachyon matter system, which has been earlier proposed as a candidate for the effective space-time description of S-branes. In particular, we study an ansatz with the maximal ISO(p+1)xSO(8-p,1) symmetry, for general brane dimensionality p and homogeneous brane distribution in transverse space ρ_\perp. A simple application of singularity theorems shows that (for p \le 7) the most general solution with these symmetries is always singular. (This invalidates a recent claim in the literature.) We include a few general comments about the possibility of describing the decay of unstable D-branes in purely gravitational terms.

19 pages, refs added

References in corpus (28)

• Rolling Tachyon
• Tachyon Matter
• Field Theory of Tachyon Matter
• Spacelike Branes
• Tachyon couplings on non-BPS D-branes and Dirac-Born-Infeld action
• TeV scale 5D $SU(3{)}_W$ unification and the fixed point anomaly cancellation with chiral split multiplets
• Tachyon Effective Actions In Open String Theory
• S-brane Solutions in Supergravity Theories
• Impact of CP phases on the search for sleptons tau and nu_tau
• Timelike Boundary Liouville Theory
• Rolling Tachyons and Decaying Branes
• Coupling of Rolling Tachyon to Closed Strings
• Time and Tachyon
• Intersection Rules for S-Branes
• Open String Creation by S-Branes
• S-Brane Thermodynamics
• Supergravity S-Branes
• Non-existence of a dilaton gravity action for the exact string black hole
• Tachyon Matter in Boundary String Field Theory
• Gravitational Radiation of Rolling Tachyon
• Does the Tachyon Matter?
• Intersecting S-Brane Solutions of D=11 Supergravity
• On supergravity solutions of space-like Dp-branes
• S-brane Actions
• Gravitational Approach to Tachyon Matter
• The Tachyon does Matter
• Non-Standard Intersections of S-Branes in D=11 Supergravity
• Null-Brane Solutions in Supergravities

Cited by in corpus (33)

• Tachyon Dynamics in Open String Theory
• Holographic Cosmology 3.0
• Remarks on Tachyon Driven Cosmology
• Prospects of Inflation
• Inflation from Superstring/M Theory Compactification with Higher Order Corrections I
• Inflation from M-Theory with Fourth-order Corrections and Large Extra Dimensions
• The Rolling Tachyon as a Matrix Model
• Inflation from Superstring/M-Theory Compactification with Higher Order Corrections II -- Case of Quartic Weyl Terms --
• D-brane Dynamics in RR Deformation of NS5-branes Background and Tachyon Cosmology
• Accelerating Universes in String Theory via Field Redefinition
• Caustic Formation in Tachyon Effective Field Theories
• Cosmological backgrounds of superstring theory and Solvable Algebras: Oxidation and Branes
• Regular S-Brane Backgrounds
• Integrability of Supergravity Billiards and the generalized Toda lattice equation
• On spacelike and timelike minimal surfaces in $Ad{S}_n$
• Cosmic Billiards with Painted Walls in Non-Maximal Supergravities: a worked out example
• Twisting S-branes
• S-matrix elements and off-shell tachyon action with non-abelian gauge symmetry
• Backreaction and the rolling tachyon -- an effective action point of view
• The Schrödinger Wave Functional and S-branes
• Dimensional reductions of M-theory S-branes to string theory S-branes
• Localized Intersections of Non-Extremal p-branes and S-branes
• Towards SDp-brane Quantization
• Towards a Supersymmetric Generalization of the Schwarzschild Black Hole
• Thermal Partition Functions for S-branes
• Time and "angular" dependent backgrounds from stationary axisymmetric solutions
• A Note on Intersections of S-branes with p-branes
• Supergravity Solutions for Harmonic, Static and Flux S-Branes
• The Strong Energy Condition and the S-Brane Singularity Problem
• Mirage cosmology with an unstable probe D3-brane
• A note on the singularity theorem for supergravity SD-branes
• Regular non-twisting S-branes
• Mirage resolution of cosmological singularities