Exact solutions of modified GST cosmology

Takao Fukui; Kenzo Arai; Masaaki Hashimoto

doi:10.1088/0264-9381/18/11/306

Exact solutions of modified GST cosmology

Takao Fukui
, Kenzo Arai
, Masaaki Hashimoto

基礎粒子系物理学

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

7 被引用数 (Scopus)

抄録

The generalized scalar-tensor (GST) theory is modified. In the modified GST theory, the cosmological term Λ is a function of the scalar field φ and of its time derivative φ² as well. We obtain exact solutions for the scale factor, the scalar field and the cosmological term which evolves with a different dependence on time for each era of the universe. The cosmological 'constant' and flatness problems are examined in the simple case of a flat universe.

本文言語	英語
ページ（範囲）	2087-2096
ページ数	10
ジャーナル	Classical and Quantum Gravity
巻	18
号	11
DOI	https://doi.org/10.1088/0264-9381/18/11/306
出版ステータス	出版済み - 6月 7 2001

!!!All Science Journal Classification (ASJC) codes

物理学および天文学（その他）

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10.1088/0264-9381/18/11/306

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title = "Exact solutions of modified GST cosmology",

abstract = "The generalized scalar-tensor (GST) theory is modified. In the modified GST theory, the cosmological term Λ is a function of the scalar field φ and of its time derivative φ2 as well. We obtain exact solutions for the scale factor, the scalar field and the cosmological term which evolves with a different dependence on time for each era of the universe. The cosmological 'constant' and flatness problems are examined in the simple case of a flat universe.",

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AB - The generalized scalar-tensor (GST) theory is modified. In the modified GST theory, the cosmological term Λ is a function of the scalar field φ and of its time derivative φ2 as well. We obtain exact solutions for the scale factor, the scalar field and the cosmological term which evolves with a different dependence on time for each era of the universe. The cosmological 'constant' and flatness problems are examined in the simple case of a flat universe.

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U2 - 10.1088/0264-9381/18/11/306

DO - 10.1088/0264-9381/18/11/306

M3 - Article

AN - SCOPUS:0035532876

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JO - Classical and Quantum Gravity

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Exact solutions of modified GST cosmology

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!!!All Science Journal Classification (ASJC) codes

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