Interacting entropy-corrected new agegraphic dark energy in Brans-Dicke cosmology

被引:48
作者
Karami, K. [1 ,2 ]
Sheykhi, A. [2 ,3 ]
Jamil, M. [4 ,5 ]
Azarmi, Z. [1 ]
Soltanzadeh, M. M. [1 ]
机构
[1] Univ Kurdistan, Dept Phys, Pasdaran St, Sanandaj, Iran
[2] Res Inst Astron & Astrophys Maragha RIAAM, Maragha, Iran
[3] Shahid Bahonar Univ, Dept Phys, Kerman, Iran
[4] Natl Univ Sci & Technol NUST, Ctr Adv Math & Phys CAMP, Islamabad, Pakistan
[5] Abdus Salam Int Ctr Theoret Phys ICTP, Trieste, Italy
关键词
Corrected entropy-area relation; New agegraphic dark energy; Brans-Dicke cosmology; PROBE WMAP OBSERVATIONS; BLACK-HOLE ENTROPY; SCALAR FIELD MODELS; EQUATION-OF-STATE; OBSERVATIONAL CONSTRAINTS; ADS/CFT CORRESPONDENCE; UNIVERSE; MAPS; AGE;
D O I
10.1007/s10714-010-1072-7
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Motivated by a recent work of one of us (Sheykhi in Phys Rev D 81: 023525, 2010), we extend it by using quantum (or entropy) corrected new agegraphic dark energy in the Brans-Dicke cosmology. The correction terms are motivated from the loop quantum gravity which is one of the competitive theories of quantum gravity. Taking the non-flat background spacetime along with the conformal age of the universe as the length scale, we derive the dynamical equation of state of dark energy and the deceleration parameter. An important consequence of this study is the phantom divide scenario with entropy-corrected new agegraphic dark energy. Moreover, we assume a system of dark matter, radiation and dark energy, while the later interacts only with dark matter. We obtain some essential expressions related with dark energy dynamics. The cosmic coincidence problem is also resolved in our model.
引用
收藏
页码:27 / 39
页数:13
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