NDLI: Dynamical dark energy from extra dimensions

Content Provider	Springer Nature Link
Author	Baukh, V. Zhuk, A.
Copyright Year	2009
Abstract	We consider multidimensional cosmological model with a higher-dimensional product manifold M = R × $$ R^{d_0 } $$ × $$ H^{d_1 } $$ /Γ, where $$ R^{d_0 } $$ is d $_{o}$-dimensional Ricci-flat external (our) space and $$ H^{d_1 } $$ /Γ is d $_{1}$-dimensional compact hyperbolic internal space. M2-brane solution for this model has the stage of accelerating expansion of the external space. We apply this model to explain the late time acceleration of our Universe. Recent observational data (the Hubble parameter at the present time and the redshift when the deceleration parameter changes its sign) fix fully all free parameters of the model. As a result, we find that considered model has too big size of the internal space at the present time and variation of the effective four-dimensional fine structure constant strongly exceeds the observational limits.
Starting Page	38
Ending Page	42
Page Count	5
File Format	PDF
ISSN	08845913
Journal	Kinematics and Physics of Celestial Bodies
Volume Number	25
Issue Number	1
e-ISSN	19348401
Language	English
Publisher	Allerton Press, Inc.
Publisher Date	2009-05-28
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astronomy
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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Dynamical dark energy from extra dimensions