Unified Dark Matter Scalar Field Models

被引：69
|
作者：
Bertacca, Daniele [1 ,2 ,3 ]
Bartolo, Nicola [1 ,2 ]
Matarrese, Sabino [1 ,2 ]
机构：
[1] Univ Padua, Dipartimento Fis Galileo Galilei, Via F Marzolo 8, I-35131 Padua, Italy
[2] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[3] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England
来源：
ADVANCES IN ASTRONOMY | 2010年 / 2010卷
关键词：
EQUATION-OF-STATE; COSMOLOGICAL CONSTANT; K-ESSENCE; LIGHT CURVES; ENERGY; UNIFICATION; DYNAMICS; PERTURBATIONS; SUPERNOVAE; STABILITY;
D O I：
10.1155/2010/904379
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We analyze and review cosmological models in which the dynamics of a single scalar field accounts for a unified description of the Dark Matter and Dark Energy sectors, dubbed Unified Dark Matter (UDM) models. In this framework, we consider the general Lagrangian of k-essence, which allows to find solutions around which the scalar field describes the desired mixture of Dark Matter and Dark Energy. We also discuss static and spherically symmetric solutions of Einstein's equations for a scalar field with noncanonical kinetic term, in connection with galactic halo rotation curves.
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页数：29
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