TY - JOUR
T1 - K-essence and kinetic gravity braiding models in two-field measure theory
AU - Cordero, R.
AU - Miranda, O. G.
AU - Serrano-Crivelli, M.
N1 - Publisher Copyright:
© 2019 IOP Publishing Ltd and Sissa Medialab.
PY - 2019/7/16
Y1 - 2019/7/16
N2 - 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 would explain the dark matter and dark energy problem at the same time. On the other hand, kinetic gravity braiding models can lead to different behaviors, such as phantom dark energy, stiff matter, and a cosmological constant. For stiff matter, there even exists the case where the scalar field does not have any effect in the dynamics of the Universe.
AB - 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 would explain the dark matter and dark energy problem at the same time. On the other hand, kinetic gravity braiding models can lead to different behaviors, such as phantom dark energy, stiff matter, and a cosmological constant. For stiff matter, there even exists the case where the scalar field does not have any effect in the dynamics of the Universe.
KW - dark energy theory
KW - dark matter theory
KW - modified gravity
UR - http://www.scopus.com/inward/record.url?scp=85072059896&partnerID=8YFLogxK
U2 - 10.1088/1475-7516/2019/07/027
DO - 10.1088/1475-7516/2019/07/027
M3 - Artículo
SN - 1475-7516
VL - 2019
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 7
M1 - 027
ER -