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gr-qc2022
Perturbations and stability conditions of k-essence and kinetic gravity braiding models in two-field measure theory
Ruben Cordero, Josue De-Santiago, Omar G. Miranda +1
We study cosmological perturbations for k-essence and kinetic gravity braiding models in the context of the two-field measure theory (TMT). Considering scalar perturbations and the…
gr-qc2019★ 14 cited
K-essence and kinetic gravity braiding models in two-field measure theory
R. Cordero, O. G. Miranda, M. Serrano-Crivelli
We show that, in the context of the two-field measure theory, any k-essence model leads to the existence of a fluid made of non-relativistic matter and cosmological constant that w…