QCD ghost f(T)-gravity model

被引:26
作者
Karami, K. [1 ]
Abdolmaleki, A. [1 ]
Asadzadeh, S. [1 ]
Safari, Z. [2 ]
机构
[1] Univ Kurdistan, Dept Phys, Sanandaj, Iran
[2] RIAAM, Maragha, Iran
来源
EUROPEAN PHYSICAL JOURNAL C | 2013年 / 73卷 / 09期
关键词
DARK-ENERGY CONSTRAINTS; GALAXY REDSHIFT SURVEY; COSMOLOGICAL CONSTANT; ACCELERATING UNIVERSE; GENERAL-RELATIVITY; CURRENT-ALGEBRA; POWER SPECTRUM; 2DF-SDSS LRG; QSO SURVEY; SUPERNOVAE;
D O I
10.1140/epjc/s10052-013-2565-9
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Within the framework of modified teleparallel gravity, we reconstruct a f(T) model corresponding to the QCD ghost dark energy scenario. For a spatially flat FRW universe containing only the pressureless matter, we obtain the time evolution of the torsion scalar T (or the Hubble parameter). Then, we calculate the effective torsion equation of state parameter of the QCD ghost f (T)-gravity model as well as the deceleration parameter of the universe. Furthermore, we fit the model parameters by using the latest observational data including SNeIa, CMB and BAO data. We also check the viability of our model using a cosmographic analysis approach. Moreover, we investigate the validity of the generalized second law (GSL) of gravitational thermodynamics for our model. Finally, we point out the growth rate of matter density perturbation. We conclude that in QCD ghost f(T)-gravity model, the universe begins a matter dominated phase and approaches a de Sitter regime at late times, as expected. Also this model is consistent with current data, passes the cosmographic test, satisfies the GSL and fits the data of the growth factor well as the ACDM model.
引用
收藏
页码:1 / 10
页数:10
相关论文
共 98 条
[1]   Ghost Chaplygin scalar field model of dark energy [J].
Adabi, F. ;
Karami, K. ;
Mousivand, M. .
CANADIAN JOURNAL OF PHYSICS, 2013, 91 (01) :54-59
[2]   Cosmographic reconstruction of f(T) cosmology [J].
Aviles, Alejandro ;
Bravetti, Alessandro ;
Capozziello, Salvatore ;
Luongo, Orlando .
PHYSICAL REVIEW D, 2013, 87 (06)
[3]  
Bamba K., 2011, J COSMOL ASTROPART P, V01
[4]   Observational information for f (T) theories and dark torsion [J].
Bengochea, Gabriel R. .
PHYSICS LETTERS B, 2011, 695 (05) :405-411
[5]   Dark torsion as the cosmic speed-up [J].
Bengochea, Gabriel R. ;
Ferraro, Rafael .
PHYSICAL REVIEW D, 2009, 79 (12)
[6]   The WiggleZ Dark Energy Survey: the growth rate of cosmic structure since redshift z=0.9 [J].
Blake, Chris ;
Brough, Sarah ;
Colless, Matthew ;
Contreras, Carlos ;
Couch, Warrick ;
Croom, Scott ;
Davis, Tamara ;
Drinkwater, Michael J. ;
Forster, Karl ;
Gilbank, David ;
Gladders, Mike ;
Glazebrook, Karl ;
Jelliffe, Ben ;
Jurek, Russell J. ;
Li, I-hui ;
Madore, Barry ;
Martin, D. Christopher ;
Pimbblet, Kevin ;
Poole, Gregory B. ;
Pracy, Michael ;
Sharp, Rob ;
Wisnioski, Emily ;
Woods, David ;
Wyder, Ted K. ;
Yee, H. K. C. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 415 (03) :2876-2891
[7]  
Bond JR, 1997, MON NOT R ASTRON SOC, V291, pL33
[8]   Notes on ghost dark energy [J].
Cai, Rong-Gen ;
Tuo, Zhong-Liang ;
Zhang, Hong-Bo ;
Su, Qiping .
PHYSICAL REVIEW D, 2011, 84 (12)
[9]   Matter bounce cosmology with the f(T) gravity [J].
Cai, Yi-Fu ;
Chen, Shih-Hung ;
Dent, James B. ;
Dutta, Sourish ;
Saridakis, Emmanuel N. .
CLASSICAL AND QUANTUM GRAVITY, 2011, 28 (21)
[10]   Limits of quintessence [J].
Caldwell, RR ;
Linder, EV .
PHYSICAL REVIEW LETTERS, 2005, 95 (14)