Large and infinite extra dimensions

  title={Large and infinite extra dimensions},
  author={Valery A. Rubakov},
  • V. Rubakov
  • Published 16 April 2001
  • Physics
  • Physics-Uspekhi
Theoretical studies on more than three spatial dimensions are currently showing a distinct shift toward the 'brane world' picture, in which ordinary matter (with the possible exceptions of gravitons and hypothetical particles interacting very weakly with matter) is within a three-dimensional submanifold — brane — embedded in a multi-dimensional space. The extra dimensions may be large and indeed infinite and may show up directly in current or future experiments. In the present paper the basic… 

Single-Brane World with Stabilized Extra Dimension

We present a model describing a single brane with tension embedded into a five-dimensional space–time with compact extra dimension, which can be easily stabilized. We examine the linearized gravity

Consistent ADD scenario with stabilized extra dimension

A model with one compact extra dimension and a scalar field of Brans–Dicke type in the bulk is discussed. It describes two branes with non-zero tension embedded into the space-time with flat

Gravitation and cosmology in a brane-universe

Recent theoretical developments have generated a strong interest in the ``brane-world'' picture, which assumes that ordinary matter is trapped in a three-dimensional submanifold, usually called

New class of N-dimensional braneworlds

The new class of the non-stationary solutions to the system of N-dimensional equations for coupled gravitational and massless scalar field is found. The model represents a single (N-1)-brane in a

Introduction to Extra Dimensions and Thick Braneworlds

In this review, we give a brief introduction on the aspects of some extra dimension models and the five-dimensional thick brane models in extended theories of gravity. First, we briey introduce the

Kaluza–Klein mass spectra on extended dimensional branes

We study the hierarchy problem on the four- and five-branes which are constructed by attaching a circle and a sphere to the standard three-brane, respectively. The effective masses in their excited

Four-dimensional description of five-dimensional N-brane models

We propose a new method for obtaining the four-dimensional effective gravitational theory for five-dimensional braneworld models with arbitrary numbers of branes in a low-energy regime, based on a

Brane-World Gravity

This review analyzes the geometry, dynamics and perturbations of simple brane-world models for cosmology and astrophysics, mainly focusing on warped 5-dimensional brane -worlds based on the Randall-Sundrum models.



Opening up extra dimensions at ultralarge scales.

It is shown that a phenomenologically acceptable range of validity of four-dimensional gravity extending from microscopic to cosmological scales is obtained without strong fine-tuning of parameters in models with infinite extra dimensions.

Gravity on a brane in infinite volume extra space

We generalize the mechanism proposed in a previous paper and show that a four-dimensional relativistic tensor theory of gravitation can be obtained on a delta-function brane in flat infinite-volume

Theories in More than Four Dimensions

Particle physics models where there are large hidden extra dimensions are currently on the focus of an intense activity. The main reason is that these large extra dimensions may come with a TeV scale

A Large mass hierarchy from a small extra dimension

We propose a new higher-dimensional mechanism for solving the hierarchy problem. The weak scale is generated from the Planck scale through an exponential hierarchy. However, this exponential arises

Compact hyperbolic extra dimensions: branes, kaluza-klein modes, and cosmology

It is shown that the spectrum of Kaluza-Klein modes is radically altered, which allows the early Universe to evolve normally up to substantial temperatures, and completely negates the astrophysical constraints on M(*.

The Shape of gravity

In a non-trivial background geometry with extra dimensions, gravitational effects will depend on the shape of the Kaluza-Klein excitations of the graviton. We investigate a consistent scenario of