Decaying vacuum cosmology and its scalar field description

被引：6
作者：
Andrade-Oliveira, F. [1 ]
Costa, F. E. M. [1 ,2 ]
Lima, J. A. S. [1 ]
机构：
[1] Univ Sao Paulo, Dept Astron, BR-05508900 Sao Paulo, Brazil
[2] Univ Fed Rural Semi Arido, BR-59900000 Pau Dos Ferros, RN, Brazil
来源：
CLASSICAL AND QUANTUM GRAVITY | 2014年 / 31卷 / 04期
基金：
巴西圣保罗研究基金会;
关键词：
cosmology; supernovae; scalar field; MICROWAVE BACKGROUND TEMPERATURE; PROBE WMAP OBSERVATIONS; DEFLATIONARY COSMOLOGY; REDSHIFT RELATION; CONSTRAINTS; CONSTANT; ENERGY; MODEL; SUPERNOVAE; UNIVERSE;
D O I：
10.1088/0264-9381/31/4/045004
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We discuss the cosmological consequences of an interacting model in the dark sector in which the A component evolves as a truncated power series of the Hubble parameter. We also discuss some of the thermodynamic features of this model. In order to constrain the free parameters of the model we carry out a joint statistical analysis involving observational data from current type Ia supernovae, recent estimates of the cosmic microwave background shift parameter and baryon acoustic oscillations measurements. Finally, we adopt a theoretical method to derive the coupled scalar field version for this non-equilibrium decaying vacuum accelerating cosmology.
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页数：12
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