摘要We discuss a particular d-dimensional Gauss--Bonnet--dilatonic universe compactified on S1 motivated from M-theory. We examine the time-evolution of the dynamical equations where many interesting consequences are revealed and discussed in some details. Under reasonable conditions, the discussed model can provide a mechanism to realize, in higher-dimensions (d>4), the accelerated expansion of the universe in the presence of dark energy, without the presence of phantom energy and without the contraction of some internal dimension.
Abstract：We discuss a particular d-dimensional Gauss--Bonnet--dilatonic universe compactified on S1 motivated from M-theory. We examine the time-evolution of the dynamical equations where many interesting consequences are revealed and discussed in some details. Under reasonable conditions, the discussed model can provide a mechanism to realize, in higher-dimensions (d>4), the accelerated expansion of the universe in the presence of dark energy, without the presence of phantom energy and without the contraction of some internal dimension.
[1] Riess A G et al 1998 Astron. J. 116 1009 [2]Perlmutter S et al 1999 Astrophys. J. 517 565 [3]Spergel D N et al 2003 Astrophys. J. Suppl. 148175 [4]Scranton R et al astro-ph/0307335 [5]Alcaniz J S 2004 Phys. Rev. D 69 083521 and referencestherein [6]Brax Ph and Martin J 1999 Phys. Lett. B 468 45 [7]Armendariz-Picon C et al 2001 Phys. Rev. D 63103510 [8] Fabris J C et al 2006 Gen. Rel. Grav. 38 495 [9]Yu Kamenshchik A et al 2001 Phys. Lett. B511265 [10]Fabris J C et al 2002 Gen. Rel. Grav. 34 53 [11]Alam U et al 2003 Mon. Not. Roy. Astron. Soc. 344 1057 and references therein [12]Debnath U, Banerjee A and Chakraborty S 2004 Class.Quantum Grav. 21 5609 and references therein [13]Batista A B et al 2001 Gen. Rel. Grav. 33 1237 [14]Sen A A, Sen, S and Sethi S 2001 Phys. Rev. D 63 10750 [15]Sen S and Seshadri T R 2003 Int. J. Mod. Phys. D 12 445 [16]Gao C J and Zhang S N astro-ph/0605682 [17]Srivastava S K gr-qc/0409074 [18]Sandvik H et al 2004 Phys. Rev. D69 123524 [19] Arik M and \c{Calik M C 2006 Mod. Phys. Lett. A 21 1241 [20]Capozziello S and Carloni S 2005 Phys. Rev. D 72 044022 and references therein [21]see for example Arkani-Hamed N et al 2000 Phys.Lett. B 480 193 [22]El-Nabulsi R A 2008 Mod. Phys. Lett. A 23 401and references therein El-Nabulsi A R 2008 Int. J. Mod. Phys. D (in press) [23]Ferrer F and R\"as\"anen S arXiv: 0707.0499 [hep-th] [24] Das S, Banerjee N and Dalhich N 2006 Class. Quant.Grav. 23 4159 and references therein [25]Nordtvedt K 1970 Astrophys. J. 161 263 Barker B M 1978 Astrophys. J. 219 5 [26]Bamba K, Guo Z K and Ohta N arXiv:0707.4334 [hep-th] [27]Alexander S et al 2000 Phys. Rev. D 62 103509 [28]Brandenberger R H et al 1989 Nucl. Phys. B 316391 [29]Parry M F et al 2002 J. High Energy Phys. 02032 [30]El-Nabulsi R A 2005 Phys. Letts. B 619 26 El-Nabulsi R A 2006 Chin. Phys. Lett. 23 1124 El-Nabulsi R A 2007 Rom. J. Phys. 52 147 El-Nabulsi R A 2007 Fizika B 16 79 El-Nabulsi R A 2006 Fizika B 15 157 El-Nabulsi R A 2007 Fizika B 16 167 El-Nabulsi R A 2007 Fizika B 16 197 El-Nabulsi R A 2007 Fizika B 16 129 [31]Faraoni V astro-ph/9602111 gr-qc/0002091 [32]Bennet C L et al 1996 Astrophys. J. Lett. 464 L1 [33]Pitjeva E V 2005 Astron. Lett. 31 340 [34]Barrow J D and Parsons P 1997 Phys. Rev. D 511906 [35]Anderson J D et al 1978 Acta Astron. 5 43
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