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A note on a mimetic scalar-tensor cosmological model

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arxiv 1509.03720 v1 pith:TGEQPLWQ submitted 2015-09-12 gr-qc hep-th

Yevgeniya Rabochaya , Sergio Zerbini This is my paper · ORCID
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keywords mimeticmodelbounceschamseddine-mukhanov-vikmancosmologicaldescribingdiscussedequations
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A specific Horndeski scalar-gravity mimetic model is investigated within a FLWR space-time. The mimetic scalar field is implemented via a Lagrangian multiplier, and it is shown that the model has equations of motion formally similar to the original simpler mimetic matter model of Chamseddine-Mukhanov-Vikman. Several exact solutions describing inflation, bounces, future time singularities are presented and discussed.

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  1. Two-field mimetic gravity revisited and Hamiltonian analysis

    gr-qc 2019-09 conditional novelty 6.0 of 10

    A two-field mimetic gravity model has two scalar degrees of freedom, not one, and the extra entropy mode is a ghost when the fields have opposite-sign kinetic terms.

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