# New no-go theorems for cosmic acceleration with extra dimensions

@article{Wesley2008NewNT, title={New no-go theorems for cosmic acceleration with extra dimensions}, author={Daniel H. Wesley}, journal={arXiv: High Energy Physics - Theory}, year={2008} }

We describe new no-go theorems for producing four-dimensional accelerating universes from warped dimensional reduction. The new theorems improve upon previous results by including dynamical extra dimensions and by treating four-dimensional universes that are not precisely de Sitter. The theorems show there exists a threshold four-dimensional equation-of-state parameter w below which the number of e-foldings of expansion is bounded, and give expressions for the maximum number of allowed e…

## 13 Citations

### A no-go for no-go theorems prohibiting cosmic acceleration in extra dimensional models

- Mathematics
- 2011

A four-dimensional effective theory that arises as the low-energy limit of some extra-dimensional model is constrained by the higher dimensional Einstein equations. Steinhardt & Wesley use this to…

### A no-go for no-go theorems prohibiting cosmic acceleration in extra dimensional models

- Mathematics
- 2011

A four-dimensional effective theory that arises as the low-energy limit of some extra-dimensional model is constrained by the higher dimensional Einstein equations. Steinhardt & Wesley use this to…

### Multidimensional Treatment of the Expanding Universe

- Physics
- 2014

The simplest six-dimensional treatment of the expanding Universe in the form a three- dimensional sphere appeared as a result of the intersection of three simplest geometrical objects of finite sizes…

### J C A P 0 1 ( 2 0 0 9 ) 0 4 1 ournal of C osmology and A stroparticle P hysics

- Physics
- 2009

We give detailed proofs of several new no-go theorems for constructing flat fourdimensional accelerating universes from warped dimensional reduction. These new theorems improve upon previous ones by…

### Codimension-2 brane–bulk matching: examples from six and ten dimensions

- Physics
- 2010

Experience with Randall–Sundrum models teaches the importance of following how branes back-react onto the bulk geometry, since this can dramatically affect the system's low-energy properties. Yet the…

### EFT for vortices with dilaton-dependent localized flux

- Physics
- 2015

A bstractWe study how codimension-two objects like vortices back-react gravitationally with their environment in theories (such as 4D or higher-dimensional supergravity) where the bulk is described…

### Nonsupersymmetric Flux Vacua and Perturbed N=2 Systems

- Mathematics
- 2008

We geometrically engineer Script N = 2 theories perturbed by a superpotential by adding 3-form flux with support at infinity to local Calabi-Yau geometries in type IIB. This allows us to apply the…

### Tunneling with negative tension

- Physics
- 2008

We describe a new family of thin-wall instantons, with negative tension bubble walls, that mediate tunneling between Minkowski or de Sitter vacua. Some of these instantons can have exponentially…

### Les Houches Lectures on Constructing String Vacua

- Computer Science
- 2008

These lectures give a detailed introduction to constructing and analyzing string vacua suitable for phenomenological model building, with particular emphasis on F-theory flux vacua. Topics include…

### EFT for vortices with dilaton-dependent localized flux

- PhysicsJournal of High Energy Physics
- 2015

We study how codimension-two objects like vortices back-react gravitationally with their environment in theories (such as 4D or higher-dimensional supergravity) where the bulk is described by a…

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