An effective Lagrangian approach based on an extended Einstein-Aether (EA) model is presented and formulated in a generic non flat Fridman-Lemaitre-Robertson-Walker (FLRW) space-time. For a flat FLRW space-time, a Friedmann equation similar to the one obtained in Quantum Loop Cosmology (QLC) is reproduced, with related non singular bounce solution. Finally, the Static Spherically Symmetric (SSS) solutions are investigated.
A note on non singular Einstein-Aether cosmologies / Casalino, Alessandro; Sebastiani, Lorenzo; Zerbini, Sergio. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 101:10(2020), pp. 104059.1-104059.10. [10.1103/PhysRevD.101.104059]
A note on non singular Einstein-Aether cosmologies
Casalino, Alessandro;Sebastiani, Lorenzo;Zerbini, Sergio
2020-01-01
Abstract
An effective Lagrangian approach based on an extended Einstein-Aether (EA) model is presented and formulated in a generic non flat Fridman-Lemaitre-Robertson-Walker (FLRW) space-time. For a flat FLRW space-time, a Friedmann equation similar to the one obtained in Quantum Loop Cosmology (QLC) is reproduced, with related non singular bounce solution. Finally, the Static Spherically Symmetric (SSS) solutions are investigated.| File | Dimensione | Formato | |
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