The dynamical evolution of 3-space in a higher dimensional steady state universe

Özgür Akarsu; Tekin Dereli

doi:10.1007/s10714-013-1505-1

The dynamical evolution of 3-space in a higher dimensional steady state universe

Özgür Akarsu^*
, Tekin Dereli

^*Bu çalışma için yazışmadan sorumlu yazar

Koc University
Abdus Salam International Centre for Theoretical Physics

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

7 Atıf (Scopus)

Özet

We investigate a class of cosmological solutions of Einstein's field equations in higher dimensions with a cosmological constant and an ideal fluid matter distribution as a source. We discuss the dynamical evolution of the universe subject to two constraints that (i) the total volume scale factor of the universe is constant and (ii) the effective energy density is constant. We obtain various interesting new dynamics for the external space that yield a time varying deceleration parameter including oscillating cases when the flat/curved external and curved/flat internal spaces are considered. We also comment on how the universe would be conceived by an observer in four dimensions who is unaware of the extra dimensions.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	959-986
Sayfa sayısı	28
Dergi	General Relativity and Gravitation
Hacim	45
Basın numarası	5
DOI'lar	https://doi.org/10.1007/s10714-013-1505-1
Yayın durumu	Yayınlandı - May 2013
Harici olarak yayınlandı	Evet

Finansman

Acknowledgments The research reported here is supported by a Post-Doc Research Grant by the Turkish Academy of Sciences (TÜBA). Ö.A. also acknowledges the financial support from Koç University and the support he received from the Abdus Salam International Center for Theoretical Physics (ICTP). Ö.A. is grateful for the hospitality of ICTP while the part of this research was being carried out. We also thank Anastasios Avgoustidis and Barıs¸ Ços¸kunüzer for discussions.

Finansörler
Koç University
TÜBA
Abdus Salam International Centre for Theoretical Physics
Türkiye Bilimler Akademisi

Belgeye Erişim

10.1007/s10714-013-1505-1

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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abstract = "We investigate a class of cosmological solutions of Einstein's field equations in higher dimensions with a cosmological constant and an ideal fluid matter distribution as a source. We discuss the dynamical evolution of the universe subject to two constraints that (i) the total volume scale factor of the universe is constant and (ii) the effective energy density is constant. We obtain various interesting new dynamics for the external space that yield a time varying deceleration parameter including oscillating cases when the flat/curved external and curved/flat internal spaces are considered. We also comment on how the universe would be conceived by an observer in four dimensions who is unaware of the extra dimensions.",

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AB - We investigate a class of cosmological solutions of Einstein's field equations in higher dimensions with a cosmological constant and an ideal fluid matter distribution as a source. We discuss the dynamical evolution of the universe subject to two constraints that (i) the total volume scale factor of the universe is constant and (ii) the effective energy density is constant. We obtain various interesting new dynamics for the external space that yield a time varying deceleration parameter including oscillating cases when the flat/curved external and curved/flat internal spaces are considered. We also comment on how the universe would be conceived by an observer in four dimensions who is unaware of the extra dimensions.

KW - Accelerated expansion

KW - Kaluza-Klein cosmology

KW - Variable deceleration parameter

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JO - General Relativity and Gravitation

JF - General Relativity and Gravitation

IS - 5

ER -

The dynamical evolution of 3-space in a higher dimensional steady state universe

Özet

Finansman

Belgeye Erişim

Diğer Dosyalar ve Linkler

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