A critical cosmological constant from millimeter extra dimensions

  title={A critical cosmological constant from millimeter extra dimensions},
  author={Jiunn-Wei Chen and Markus A. Luty and Eduardo Pont{\'o}n},
  journal={Journal of High Energy Physics},
We consider `brane universe' scenarios with standard-model fields localized on a 3-brane in 6 spacetime dimensions. We show that if the spacetime is rotationally symmetric about the brane, local quantities in the bulk are insensitive to the couplings on the brane. This potentially allows compactifications where the effective 4-dimensional cosmological constant is independent of the couplings on the 3-brane. We consider several possible singularity-free compactification mechanisms, and find that… 

Brane worlds with bolts

We construct a family of (p+3)-dimensional brane worlds in which the brane has one compact extra dimension, the bulk has two extra dimensions, and the bulk closes regularly at codimension two

Bulk singularities and the effective cosmological constant for higher co-dimension branes

We study a general configuration of parallel branes having co-dimension ≥ 2 situated inside a compact d-dimensional bulk space within the framework of a scalar and flux field coupled to gravity in D

Spheres, deficit angles and the cosmological constant

We consider compactifications of six-dimensional gravity in four-dimensional Minkowski or de Sitter space times a two-dimensional sphere, S2. As has been pointed out recently, it is possible to


In this thesis, we describe the properties of brane worlds embedded in a spacetime with two extra dimensions. We derive and describe the boundary conditions that branes impose on the bulk fields in

Brane cosmological solutions in six-dimensional warped flux compactifications

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

Charting the landscape of modified gravity

We explore brane induced gravity on a 3-brane in six locally flat dimensions. To regulate the short distance singularities in the brane core, we resolve the thin brane by a cylindrical 4-brane, with

Natural braneworlds in six dimensions and the cosmological constant problem

The observed accelerated expansion of the universe is successfully parameterized by a cosmological constant. However, since this parameter in Einstein's equations is not protected against quantum

Holographic self-tuning of the cosmological constant

A bstractWe propose a brane-world setup based on gauge/gravity duality in which the four-dimensional cosmological constant is set to zero by a dynamical self-adjustment mechanism. The bulk contains

Hybrid compactifications and brane gravity in six dimensions

We consider a six-dimensional axisymmetric Einstein–Maxwell model of warped braneworlds. The bulk is bounded by two branes, one of which is a conical 3-brane and the other is a 4-brane wrapped around



The Cosmological Constant from the Viewpoint of String Theory

The mystery of the cosmological constant is probably the most pressing obstacle to significantly improving the models of elementary particle physics derived from string theory. The problem arises

Curvature Singularities: the Good, the Bad, and the Naked

Necessary conditions are proposed for the admissibility of singular classical solutions with 3+1-dimensional Poincare invariance to five-dimensional gravity coupled to scalars. Finite temperature

General relativity


  • Lett. 471B, 119
  • 1999


  • Lett. 215B, 67 (1988); Phys. Lett. 470B, 52
  • 1999


  • Rev. Lett. 83, 4690
  • 1999

astro-ph/9805201. The Supernova Cosmology Project (S

  • J. 116,
  • 1998

Phys. Rev. D59

  • Phys. Rev. D59
  • 1999

JHEP 9811:023 (1998)

  • hep-ph/9807415; I. Antoniadis, C. Bachas, Phys. Lett. 450B, 83 (1999), hep-th/9812093; I. Antoniadis, C. Bachas, E. Dudas, Nucl. Phys. B560, 93
  • 1999


  • Rev. Lett. 83, 3370
  • 1999