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Warped flux compactification and brane gravity

Shinji Mukohyama1,2, Yuuiti Sendouda1, Hiroyuki Yoshiguchi1 and Shunichiro Kinoshita1

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We find a simple exact solution for a six-dimensional braneworld which captures some essential features of warped flux compactification, including a warped geometry, compactification, a magnetic flux and one or two 3-brane(s). In this set-up we analyse how the Hubble expansion rate on each brane changes when the brane tension changes. It is shown that the effective Newton's constant resulting from this analysis agrees with that inferred by simply integrating extra dimensions out. On the basis of the result, a general formula for the effective Newton's constant is conjectured and its application to cosmology with type IIB warped string compactification is discussed.


Keywords

cosmology with extra dimensions

extra dimensions

string theory and cosmology

 

E-print Number: hep-th/0506050

Cited: by |

Refers: to

PACS

11.25.Mj Compactification and four-dimensional models

11.25.Wx String and brane phenomenology

98.80.Es Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc)

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

95.30.Sf Relativity and gravitation

Subjects

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 07 (July 2005)

Received 16 June 2005, accepted for publication 30 June 2005

Published 21 July 2005



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