Cosmologies with scalar fields from higher dimensions: K-essence like fields

Socorro, J.; Sesma, L. Toledo; Pimentel, Luis O.

doi:10.1088/1742-6596/1030/1/012010

Cited by 1 publication

(1 citation statement)

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“…It has been shown that the classical tests of general relativity and the experimental limits on violation of the equivalence principle do not disqualify any higher dimensional theories of gravity [5][6][7]. Concerning astrophysical/cosmological applications, such induced sectors or their extensions can play the role of either ordinary matter, dark matter or dark energy [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Late time cosmic acceleration in modified Sáez–Ballester theory

Rasouli

Pacheco

Sakellariadou

et al. 2020

Physics of the Dark Universe

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We establish an extended version of the modified Sáez-Ballester (SB) scalar-tensor theory in arbitrary dimensions whose energy momentum tensor as well as potential are pure geometrical quantities. This scenario emerges by means of two scalar fields (one is present in the SB theory and the other is associated with the extra dimension) which widens the scope of the induced-matter theory. Moreover, it bears a close resemblance to the standard Sáez-Ballester scalar-tensor theory, as well as other alternative theories to general relativity, whose construction includes either a minimally or a non-minimally coupled scalar field. However, contrary to those theories, in our framework the energy momentum tensor and the scalar potential are not added by hand, but instead are dictated from the geometry. Concerning cosmological applications, our herein contribution brings a new perspective. We firstly show that the dark energy sector can be naturally retrieved within a strictly geometric perspective, and we subsequently analyze it. Moreover, our framework may provide a hint to understand the physics of lower gravity theories.

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