Fate of the phantom dark energy universe in semiclassical gravity. II. Scalar phantom fields

de Haro Jaume; Amoros Jaume; Elizalde Emilio

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Fate of the phantom dark energy universe in semiclassical gravity. II. Scalar phantom fields

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Quantum corrections coming from massless fields conformally coupled with gravity are studied, in order to see if they can lead to avoidance of the annoying big rip singularity which shows up in a flat Friedmann-Robertson-Walker universe filled with dark energy and modeled by a scalar phantom field. The dynamics of the model are discussed for all values of the two parameters, named alpha > 0 and beta < 0, corresponding to the regularization process. The new results are compared with the ones obtained in J. Haro J. Amoros, and E. Elizalde, Phys. Rev. D 83, 123528 (2011) previously, where dark energy was modeled by means of a phantom fluid with equation of state P = omega rho, with omega < -1.

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《Physical review, D. Particles, fields, gravitation, and cosmology》 |2012年第1期|共8页
作者
de Haro Jaume; Amoros Jaume; Elizalde Emilio;
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作者单位

Univ Politecn Cataluna, Dept Matemat Aplicada 1, E-08028 Barcelona, Spain;

Fac Ciencias, Inst Ciencias Espacio CSIC, Bellaterra 08193, Barcelona, Spain;

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正文语种英语
中图分类粒子物理学;场论;
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Fate of the phantom dark energy universe in semiclassical gravity. II. Scalar phantom fields

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