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Phantom cosmology with non-minimally coupled real scalar field |
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| Authors: | Zu-Yao Sun You-Gen Shen |
| Affiliation: | (1) Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, 200030;(2) People!["rsquo"]("/content/v24k574558402285/xlarge8217.gif") s Republic of China Graduate School of the Chinese Academy of Sciences, Beijing, 100039;(3) Peoples Republic of China National Astronomical Observatories, Beijing, 100012, Peoples Republic of China;(4) Peoplex00027;s Republic of China National Astronomical Observatories, Beijing, 100012;(5) Peoples Republic of China Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100080, Peoples Republic of China |
| Abstract: | We find that the expansion of the universe is accelerating by analyzing the recent observation data of type Ia supernova (SN-Ia). It indicates that the equation of state of the dark energy might be smaller than -1, which leads to the introduction of phantom models featured by its negative kinetic energy to account for the regime of equation of state parameter w < -1. In this paper the possibility of using a non-minimally coupled real scalar field as phantom to realize the equation of state parameter w < -1 is discussed. The main equations which govern the evolution of the universe are obtained. Then we rewrite them with the observable quantities. |
| Keywords: | Dark energy Phantom Non-minimally coupled Scalar field |
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