Anisotropic Einstein Yang-Mills Higgs dark energy

Orjuela-Quintana, J. Bayron; Álvarez, M. Dovale; Valenzuela-Toledo, César A.; Rodríguez, Yeinzon

doi:10.1088/1475-7516/2020/10/019

Cited by 25 publications

(15 citation statements)

References 64 publications

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“…In the Fig. 7, we present the 68.3, 90 and 99% confidence level plot for the parameters It is worth mentioning here that all this confidence contours corresponds to value of α = 1 [77]. The parameter α cannot be constrained from the present observational data we have considered here.…”

Section: Ohdmentioning

confidence: 90%

Confronting Einstein Yang Mills Higgs dark energy in light of observations

Adak¹

2020

Eur. Phys. J. C

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We study the observational aspects of Einstein Yang Mills Higgs dark energy model and constrain the parameters space from the latest observational data from type Ia supernovae, observational Hubble data, baryon acoustic oscillation data and cosmic microwave background radiation shift parameter data. It is found from the analysis of data that the Higgs field in presence of gauge fields can successfully describe the present accelerated expansion of the universe consistent with the astrophysical observations.

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Section: Ohdmentioning

confidence: 90%

Confronting Einstein Yang Mills Higgs dark energy in light of observations

Adak¹

2020

Eur. Phys. J. C

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“…[107] The scenario discussed in this paper can be reasonably thought, therefore, as an effective single-scalar-field mechanism of primordial inflation. The vector signatures of the scenario will reveal when the cosmic triad be slightly modified so that the anisotropies in the expansion, [108,109] in the spectrum, [110] and in the bispectrum [111,112] of the primordial curvature perturbation can be calculated. These aspects as well as the potential of this scenario to explain the formation of primordial black holes, as described in ref.…”

Section: Discussionmentioning

confidence: 99%

Constant‐Roll Inflation in the Generalized SU(2) Proca Theory

et al. 2022

Self Cite

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The generalized SU(2) Proca theory (GSU2P) is a variant of the well known generalized Proca theory where the vector field belongs to the Lie algebra of the SU(2) group of global transformations under which the action is made invariant. New interesting possibilities arise in this framework because of the existence of new interactions of purely non-Abelian character and new configurations of the vector field resulting in spatial spherical symmetry and the cosmological dynamics being driven by the propagating degrees of freedom. We study the 2D phase space of the system that results when the cosmic triad configuration is employed in the Friedmann-Lemaitre-Robertson-Walker background and find an attractor curve whose attraction basin both covers almost all the allowed region and does not include a Big-Bang singularity. Such an attractor curve corresponds to a primordial inflationary solution that has the following characteristic properties: 1) it is a de Sitter solution whose Hubble parameter is regulated by a generalized version of the SU(2) group coupling constant, 2) it is constant-roll including, as a limiting case, the slow-roll variety, 3) a number of e-folds N > 60 is easily reached, 4) it has a graceful exit into a radiation dominated period powered by the canonical kinetic term of the vector field and the Einstein-Hilbert term. The free parameters of the action are chosen such that the tensor sector of the theory is the same as that of general relativity at least up to second-order perturbations, thereby avoiding the presence of ghost and Laplacian instabilities in the tensor sector as well as making the gravity waves propagate at light speed. This is a proof of concept of the interesting properties that could be found in this scenario when the coupling constants be replaced by general coupling functions and more terms be discovered in the GSU2P.

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“…The scenario discussed in this paper can be reasonably thought, therefore, as an effective single-scalar-field mechanism of primordial inflation. The vector signatures of the scenario will reveal when the cosmic triad be slightly modified so that the anisotropies in the expansion [105,106], in the spectrum [107], and in the bispectrum [108,109] of the primordial curvature perturbation can be calculated. These aspects as well as the potential of this scenario in the ultra slow-roll variety to explain the formation of primordial black holes, as described in Refs.…”

Section: Discussionmentioning

confidence: 99%

Constant-roll inflation in the generalized SU(2) Proca theory

Garnica,

Gomez,

Navarro

et al. 2021

Preprint

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The generalized SU(2) Proca theory (GSU2P for short) is a variant of the well known generalized Proca theory (GP for short) where the vector field belongs to the Lie algebra of the SU(2) group of global transformations under which the action is made invariant. New interesting possibilities arise in this framework because of the existence of new interactions of purely non-Abelian character and new configurations of the vector field that result in spatial spherical symmetry and the cosmological dynamics being driven by the propagating degrees of freedom. We study the two-dimensional phase space of the system that results when the cosmic triad configuration is employed in the Friedmann-Lemaitre-Robertson-Walker background and find an attractor curve whose attraction basin covers almost all the allowed region. Such an attractor curve corresponds to a primordial inflationary solution that has the following characteristic properties: 1.) it is a de Sitter solution whose Hubble parameter is regulated by a generalized version of the SU(2) group coupling constant, 2.) it is constant-roll including, as opposite limiting cases, the slow-roll and ultra slow-roll varieties, 3.) a number of e-folds N > 60 is easily reached, 4.) it has a graceful exit into a radiation dominated period powered by the canonical kinetic term of the vector field and the Einstein-Hilbert term. The free parameters of the action are chosen such that the tensor sector of the theory is the same as that of general relativity at least up to second-order perturbations, thereby avoiding the presence of ghost and Laplacian instabilities in the tensor sector as well as making the gravity waves propagate at light speed. This is a proof of concept of the interesting properties we could find in this scenario when the coupling constants be replaced by general coupling functions.

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Anisotropic Einstein Yang-Mills Higgs dark energy

Cited by 25 publications

References 64 publications

Confronting Einstein Yang Mills Higgs dark energy in light of observations

Confronting Einstein Yang Mills Higgs dark energy in light of observations

Constant‐Roll Inflation in the Generalized SU(2) Proca Theory

Constant-roll inflation in the generalized SU(2) Proca theory

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