Kaniadakis holographic dark energy: observational constraints and global dynamics

Hernández-Almada, A.; Leon, Genly; Magaña, Juan; García-Aspeitia, Miguel A.; Motta, V.; Saridakis, Emmanuel N.; Yesmakhanova, Kuralay

doi:10.48550/arxiv.2111.00558

Cited by 4 publications

(4 citation statements)

References 76 publications

(87 reference statements)

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“…There are many extensions of the previous holographic model following either the Tsallis non-extensive entropy [781,782], the quantum-gravitational modified Barrow entropy [783,784], or the Kaniadakis relativistic entropy [785][786][787]. It has been discussed that the Hubble constant tension can be alleviated with Tsallis holographic dark energy [788] or with Kaniadakis holographic dark energy [789].…”

Section: Holographic Dark Energymentioning

confidence: 99%

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies

Abdalla,

Abellán,

Aboubrahim

et al. 2022

Preprint

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This White Paper has been prepared to fulfill SNOWMASS 2021 requirements and it extends the material previously summarized in the four Letters of Interest [1][2][3][4]. The Particle Physics Community Planning Exercise (a.k.a. SNOWMASS ) is organized by the Division of Particles and Fields of the American Physical Society, and this is an effort to bring together the community of theoretical physicists and cosmologists and identify promising opportunities to address the questions described.This White Paper was initiated with the aim of identifying the opportunities in the cosmological field for the next decade, and strengthening the coordination of the community. It is addressed to identifying the most promising directions of investigation, and rather than attempting a long review of the current status of the whole field of research, it focuses on the upcoming theoretical opportunities and challenges described. The White Paper is a collaborative effort led by Eleonora Di Valentino and Luis Anchordoqui, and it is organized in the topics listed below, each of them coordinated by the scientists indicated (alphabetical order):

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Section: Holographic Dark Energymentioning

confidence: 99%

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies

Abdalla,

Abellán,

Aboubrahim

et al. 2022

Preprint

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“…However, several extensions have appeared in the literature, by using various modified entropy relations, arising from nonextensive generalizations of the statistics of horizon degrees of freedom and/or quantum gravitational deformations of the horizon geometry. Among these, special focus has been placed on Tsallis [19] and Kaniadakis [20] entropies, whose cosmological applications have been addressed in [21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Baryon asymmetry from Barrow entropy: theoretical predictions and observational constraints

Luciano

Saridakis

2022

Eur. Phys. J. C

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We investigate the generation of baryon asymmetry from the corrections brought about in the Friedman equations due to Barrow entropy. In particular, by applying the gravity-thermodynamics conjecture one obtains extra terms in the Friedmann equations that change the Hubble function evolution during the radiation-dominated epoch. Hence, even in the case of standard coupling between the Ricci scalar and baryon current they can lead to a non-zero baryon asymmetry. In order to match observations we find that the Barrow exponent should lie in the interval $$0.005\lesssim \Delta \lesssim 0.008$$ 0.005 ≲ Δ ≲ 0.008 , which corresponds to a slight deviation from the standard Bekenstein–Hawking entropy. The upper bound is tighter than the one of other observational constraints, however the interesting feature is that in the present analysis we obtain a non-zero lower bound. Nevertheless this lower bound would disappear if the baryon asymmetry in Barrow-modified cosmology is generated by other mechanisms, not related to the Barrow modification.

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“…The AICc and BIC are defined as AICc = χ 2 min + 2k + (2k 2 + 2k)/(N − k − 1) and BIC = χ 2 min +k ln(N ) respectively, where χ 2 min is the minimum of the χ 2 function, N is the size of the dataset and k is the number of free parameters. Following the rules described in [69], we find that Λ = 0 model and ΛCDM are statistically equivalent based on AICc, when the sample are treated separately, but show a strong evidence against the scenario when the joint analysis is applied. On the other hand, although AICc suggests that Λ = 0 model and ΛCDM are statistically equivalent in the joint analysis, BIC indicates that there is a strong evidence against the candidate model.…”

Section: B Resultsmentioning

confidence: 75%

Observational constraints and dynamical analysis of Kaniadakis horizon-entropy cosmology

Hernández-Almada,

Leon,

Magaña

et al. 2021

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We study the scenario of Kanadiakis horizon entropy cosmology which arises from the application of the gravity-thermodynamics conjecture using the Kaniadakis modified entropy. The resulting modified Friedmann equations contain extra terms that constitute an effective dark energy sector. We use data from Cosmic chronometers, Supernova Type Ia, HII galaxies, Strong lensing systems, and Baryon acoustic oscillations observations and we apply a Bayesian Markov Chain Monte Carlo analysis to construct the likelihood contours for the model parameters. We find that the Kaniadakis parameter is constrained around 0, namely, around the value where the standard Bekenstein-Hawking is recovered. Concerning the normalized Hubble parameter, we find h = 0.708 +0.012 −0.011 , a result that is independently verified by applying the H0(z) diagnostic and, thus, we conclude that the scenario at hand can alleviate the H0 tension problem. Regarding the transition redshift, the reconstruction of the cosmographic parameters gives zT = 0.715 +0.042 −0.041 . Lastly, we perform a phasespace analysis, and we show that the Universe past attractor is the matter-dominated epoch, while at late times the Universe results in the dark-energy-dominated solution.

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Kaniadakis holographic dark energy: observational constraints and global dynamics

Cited by 4 publications

References 76 publications

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies

Baryon asymmetry from Barrow entropy: theoretical predictions and observational constraints

Observational constraints and dynamical analysis of Kaniadakis horizon-entropy cosmology

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