Built on

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Earlier work this paper cites.
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1989
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S. Weinberg, “The Cosmological Constant Problem,” Rev. Mod. Phys
1989
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2016

Cosmological Constraints on Higgs-Dilaton Inflation

Trashorras, Manuel, Nesseris, Savvas, Garcia-Bellido, Juan

Understand

We test the viability of the Higgs-dilaton model (HDM) compared to the evolving dark energy ($w_0 w_a$CDM) model, in which the cosmological constant model $\Lambda$CDM is also nested, by using the latest cosmological data that includes the cosmic microwave background temperature, polarization and lensing data from the \textit{Planck} satellite (2015 data release), the BICEP and Keck Array experiments, the Type Ia supernovae from the JLA catalog, the baryon acoustic oscillations from CMASS, LOWZ and 6dF, the weak lensing data from the CFHTLenS survey and the matter power Spectrum measurements from the SDSS (data release 7).

We find that the values of all cosmological parameters allowed by the Higgs-dilaton inflation model are well within the \textit{Planck} satellite (2015 data release) constraints.
In particular, we have that $w_0 = -1.0001^{+0.0072}_{-0.0074}$, $w_a = 0.00^{+0.15}_{-0.16}$, $n_s = 0.9693^{+0.0083}_{-0.0082}$, $\alpha_s = -0.001^{+0.013}_{-0.014}$ and $r_{0.05} = 0.0025^{+0.0017}_{-0.0016}$ (95.5\%C.L.).
We also place new stringent constraints on the couplings of the Higgs-dilaton model and we find that $\xi_{\chi} < 0.00328$ and $\xi_h / \sqrt{\lambda} = 59200^{+30000}_{-20000}$ (95.5\%C.L.).

Built on

J. M. Bardeen, “Gauge Invariant Cosmological Perturbations,” Phys. Rev
1905
Earlier work this paper cites.
H. Kodama and M. Sasaki, “Cosmological Perturbation Theory,” Prog. Theor. Phys. Suppl
1984
Earlier work this paper cites.
D. S. Salopek, J. R. Bond, and J. M. Bardeen, “Designing Density Fluctuation Spectra in Inflation,” Phys. Rev
1989
Earlier work this paper cites.
S. Weinberg, “The Cosmological Constant Problem,” Rev. Mod. Phys
1989
Earlier work this paper cites.
V. F. Mukhanov, H. A. Feldman, and R. H. Brandenberger, “Theory of cosmological perturbations. Part 1. Classical perturbations. Part 2. Quantum theory of perturbations. Part 3. Extensions,” Phys. Rept
1992
Earlier work this paper cites.
J. Garcia-Bellido and D. Wands, “Constraints from inflation on scalar - tensor gravity theories,” Phys. Rev
1995
Earlier work this paper cites.
J. Garcia-Bellido and D. Wands, “Metric perturbations in two field inflation,” Phys. Rev
1996
Earlier work this paper cites.
E. J. Copeland, A. R. Liddle, and D. Wands, “Exponential potentials and cosmological scaling solutions,” Phys. Rev
1998
Earlier work this paper cites.
P. G. Ferreira and M. Joyce, “Cosmology with a primordial scaling field,” Phys. Rev
1998
Earlier work this paper cites.
J. C. Mather, D. J. Fixsen, R. A. Shafer, C. Mosier, and D. T. Wilkinson, “Calibrator design for the COBE far infrared absolute spectrophotometer (FIRAS),” Astrophys. J
1999
Earlier work this paper cites.
D. J. Schwarz, C. A. Terrero-Escalante, and A. A. Garcia, “Higher order corrections to primordial spectra from cosmological inflation,” Phys. Lett
2001
Earlier work this paper cites.
A. R. Liddle, “Information criteria for astrophysical model selection,” Mon. Not. Roy. Astron. Soc
2007
Earlier work this paper cites.
F. L. Bezrukov and M. Shaposhnikov, “The Standard Model Higgs boson as the inflaton,” Phys. Lett
Original
2008
Earlier work this paper cites.
R. J. Scherrer and A. A. Sen, “Thawing quintessence with a nearly flat potential,” Phys. Rev
Original
2008
Earlier work this paper cites.