### Abstract

We present a model with an infinite volume bulk in which a braneworld with a cosmological constant evolves to a static, four-dimensional Minkowski spacetime. This evolution occurs for a generic class of initial conditions with positive energy densities. The metric everywhere outside the brane is that of a five-dimensional Minkowski spacetime, where the effect of the brane is the creation of a frame with a varying speed of light. This fact is encoded in the structure of the four-dimensional graviton propagator on the braneworld, which may lead to some interesting Lorentz symmetry violating effects. In our framework the cosmological constant problem takes a different meaning, since the flatness of the Universe is guaranteed for an arbitrary negative cosmological constant. Instead, constraints on the model come from different concerns which we discuss in detail.

Original language | English (US) |
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Article number | 104002 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 64 |

Issue number | 10 |

State | Published - Nov 15 2001 |

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### ASJC Scopus subject areas

- Physics and Astronomy (miscellaneous)

### Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*64*(10), [104002].

**Braneworld flattening by a cosmological constant.** / Deffayet, Cedric; Dvali, Gia; Gabadadze, Gregory; Lue, Arthur.

Research output: Contribution to journal › Article

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 64, no. 10, 104002.

}

TY - JOUR

T1 - Braneworld flattening by a cosmological constant

AU - Deffayet, Cedric

AU - Dvali, Gia

AU - Gabadadze, Gregory

AU - Lue, Arthur

PY - 2001/11/15

Y1 - 2001/11/15

N2 - We present a model with an infinite volume bulk in which a braneworld with a cosmological constant evolves to a static, four-dimensional Minkowski spacetime. This evolution occurs for a generic class of initial conditions with positive energy densities. The metric everywhere outside the brane is that of a five-dimensional Minkowski spacetime, where the effect of the brane is the creation of a frame with a varying speed of light. This fact is encoded in the structure of the four-dimensional graviton propagator on the braneworld, which may lead to some interesting Lorentz symmetry violating effects. In our framework the cosmological constant problem takes a different meaning, since the flatness of the Universe is guaranteed for an arbitrary negative cosmological constant. Instead, constraints on the model come from different concerns which we discuss in detail.

AB - We present a model with an infinite volume bulk in which a braneworld with a cosmological constant evolves to a static, four-dimensional Minkowski spacetime. This evolution occurs for a generic class of initial conditions with positive energy densities. The metric everywhere outside the brane is that of a five-dimensional Minkowski spacetime, where the effect of the brane is the creation of a frame with a varying speed of light. This fact is encoded in the structure of the four-dimensional graviton propagator on the braneworld, which may lead to some interesting Lorentz symmetry violating effects. In our framework the cosmological constant problem takes a different meaning, since the flatness of the Universe is guaranteed for an arbitrary negative cosmological constant. Instead, constraints on the model come from different concerns which we discuss in detail.

UR - http://www.scopus.com/inward/record.url?scp=0035890490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035890490&partnerID=8YFLogxK

M3 - Article

VL - 64

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 10

M1 - 104002

ER -