Dark matter from dark energy-baryonic matter couplings

被引：22

作者：

Aviles, Alejandro ^{[1
,2
]}

Cervantes-Cota, Jorge L. ^{[2
,3
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City, DF, Mexico

[2] Inst Nacl Invest Nucl, Dept Fis, Mexico City 11801, DF, Mexico

[3] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 02期

关键词：

PROBE WMAP OBSERVATIONS; DILATON; QUINTESSENCE; SUPERNOVAE;

D O I：

10.1103/PhysRevD.83.023510

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a scenario in which a scalar field dark energy is coupled to the trace of the energy momentum tensor of the baryonic matter fields. In the slow-roll regime, this interaction could give rise to the cosmological features of dark matter. We work out the cosmological background solutions and fit the parameters of the model using the Union 2 supernovae data set. Then, we develop cosmological perturbations up to linear order, and we find that the perturbed variables have an acceptable behavior, in particular, the density contrast of baryonic matter grows similar to that in the Lambda CDM model for a suitable choice of the strength parameter of the coupling.

引用

页数：10

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