# Stability and negative tensions in 6D brane worlds

@article{Parameswaran2007StabilityAN, title={Stability and negative tensions in 6D brane worlds}, author={Susha Parameswaran and Seif Randjbar-Daemi and Alberto Salvio}, journal={Journal of High Energy Physics}, year={2007}, volume={2008}, pages={051-051} }

We investigate the dynamical stability of warped, axially symmetric compactifications in anomaly free 6D gauged supergravity. The solutions have conical defects, which we source by 3-branes placed on orbifold fixed points, and a smooth limit to the classic sphere-monopole compactification. Like for the sphere, the extra fields that are generically required by anomaly freedom are especially relevant for stability. With positive tension branes only, there is a strict stability criterion…

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## References

SHOWING 1-10 OF 55 REFERENCES

### Black Holes and Instabilities of Negative Tension Branes

- Physics
- 2001

We consider the collision in $2+1$ dimensions of a black hole and a negative tension brane on an orbifold. Because there is no gravitational radiation in $2+1$ dimensions, the horizon area shrinks…

### 4d-flat compactifications with brane vorticities

- Physics
- 2004

We present solutions in six-dimensional gravity coupled to a sigma model, in the presence of three-brane sources. The space transverse to the branes is a compact non-singular manifold. The example of…

### Gauss-Bonnet gravity renders negative tension braneworlds unstable

- Physics
- 2004

We show that the addition of the Gauss-Bonnet term to Einstein gravity induces a tachyon mode in the spin two fluctuations of the Randall-Sundrum I model. We demonstrate that this instability is…

### Scaling solutions to 6D gauged chiral supergravity

- Physics, Mathematics
- 2006

We construct explicitly time-dependent exact solutions to the field equations of six-dimensional (6D) gauged chiral supergravity, compactified to 4D in the presence of up to two three-branes situated…

### Kicking the rugby ball: perturbations of 6D gauged chiral supergravity

- Physics
- 2007

We analyse the axially symmetric scalar perturbations of 6D chiral gauged supergravity compactified on the general warped geometries in the presence of two source branes. We find that all of the…

### Non-Compact Compactifications with Brane Worlds

- Physics
- 1999

The possibility of neutral, brane-like solutions in a higher dimensional setting is discussed. In particular, we describe a supersymmetric solution in six dimensions which can be interpreted as a…

### Sidestepping the cosmological constant with football shaped extra dimensions

- Physics
- 2003

We present an exact solution for a factorizable brane-world spacetime with two extra dimensions and explicit brane sources. The compactification manifold has the topology of a two-sphere, and is…

### SUSY breaking and moduli stabilization from fluxes in gauged 6D supergravity

- Physics
- 2003

We construct the 4D N=1 supergravity which describes the low-energy limit of 6D supergravity compactified on a sphere with a monopole background a la Salam and Sezgin. This provides a simple setting…

### Brane cosmological solutions in six-dimensional warped flux compactifications

- Physics
- 2007

We study cosmology on a conical brane in the six-dimensional Einstein–Maxwell-dilaton system, where the extra dimensions are compactified by a magnetic flux. We systematically construct exact…