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Exact Solutions in w<−1 SFT Inspired Cosmological Modelsстатья
- Авторы: Aref'eva I.Ya, Koshelev A.S., Vernov S.Yu
- Журнал: Bulgarian Journal of Physics
- Том: 33
- Номер: S1
- Год издания: 2006
- Первая страница: 360
- Последняя страница: 367
- Аннотация: Exact solutions to the Friedmann equations with a stringy inspired phantom field are constructed. The Universe is considered as a slowly decaying D3-brane, which is described in the string field theory (SFT) framework. The D3-brane dynamics is approximately described by a nonlocal string tachyon interaction and the back reaction of gravity is incorporated in the closed string tachyon dynamics. In a local effective approximation this model contains one phantom component and one usual scalar field. The notable feature of this model is a ghost sign of the kinetic term of the phantom scalar field. We find explicit solutions with the Dark Energy state parameter wDE reaching the barrier w_DE=-1 from below at large time.
- Добавил в систему: Вернов Сергей Юрьевич