Can late dark energy transitions raise the Hubble constant?

Benevento, Giampaolo; Hu, Wayne; Raveri, Marco

doi:10.1103/physrevd.101.103517

Cited by 177 publications

(119 citation statements)

References 25 publications

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“…It is important to realize that the derivative is very different for CMB and BAO due to the vast difference in redshifts at which the standard ruler is observed, z ⋆ ≈ 1100 for CMB vs. z obs~1 for BAO, resulting in different values of the integral in Eq. (7). This results in different slopes of the respective r d (h) lines.…”

Section: Methodsmentioning

confidence: 97%

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Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension

2021

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The mismatch between the locally measured expansion rate of the universe and the one inferred from the cosmic microwave background measurements by Planck in the context of the standard ΛCDM, known as the Hubble tension, has become one of the most pressing problems in cosmology. A large number of amendments to the ΛCDM model have been proposed in order to solve this tension. Many of them introduce new physics, such as early dark energy, modifications of the standard model neutrino sector, extra radiation, primordial magnetic fields or varying fundamental constants, with the aim of reducing the sound horizon at recombination r⋆. We demonstrate here that any model which only reduces r⋆ can never fully resolve the Hubble tension while remaining consistent with other cosmological datasets. We show explicitly that models which achieve a higher Hubble constant with lower values of matter density Ωmh2 run into tension with the observations of baryon acoustic oscillations, while models with larger Ωmh2 develop tension with galaxy weak lensing data.

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Section: Methodsmentioning

confidence: 97%

“…Late time modifications based on simple phenomenological parameterizations tend to fall short of fully resolving the tension 7 . This is largely because the baryon acoustic oscillation (BAO) and and supernovae (SN) data, probing the expansion in the 0 ≲ z ≲ 1 range, are generally consistent with a constant dark energy density.…”

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confidence: 99%

Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension

2021

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“…Intuitively, increasing the number of species increases the contribution of these species in the calculation of background evolution, thus increasing the value of the expansion rate. Despite the efforts spent to cover the shortcomings of the standard model by including new factors, the current conclusion is that such tension cannot be dealt within reasonable physics beyond the standard cosmological model since any resolution of this disagreement produces even greater tensions with other parameters of the model such as Ω m and σ 8 [30,31,32,33,160,161].…”

Section: Cosmography In General Relativity and In Extended Theories Of Gravitymentioning

confidence: 95%

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

et al. 2021

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In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter is hidden in the Universe and what is it made of? that, even after 40 years from the Vera Rubin seminal discovery [1] does not have a proper answer. Actually, the more we have investigated, the more this issue has become strongly entangled with aspects that go beyond the established Quantum Physics, the Standard Model of Elementary particles and the General Relativity and related to processes like the Inflation, the accelerated expansion of the Universe and High Energy Phenomena around compact objects. Even Quantum Gravity and very exotic Dark Matter particle candidates may play a role in framing the Dark Matter mystery that seems to be accomplice of new unknown Physics. Observations and experiments have clearly indicated that the above phenomenon cannot be considered as already theoretically framed, as hoped for decades. The Special Topic to which this review belongs wants to penetrate this newly realized mystery from different angles, including that of a contamination of different fields of Physics apparently unrelated. We show with the works of this ST that this contamination is able to guide us into the required new Physics. This review wants to provide a good number of these “paths or contamination” beyond/among the three worlds above; in most of the cases, the results presented here open a direct link with the multi-scale dark matter phenomenon, enlightening some of its important aspects. Also in the remaining cases, possible interesting contacts emerges. Finally, a very complete and accurate bibliography is provided to help the reader in navigating all these issues.

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“…There are many attempts to alleviate the issue in the literature (see for an incomplete list of works Refs. [ 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 ] and the recent overview in [ 79 , 80 ]). It has been recently discussed [ 81 , 82 ] that a transition in absolute magnitude

for SnIa can also explain the apparent tension between the local and CMB measurements of the Hubble parameter

.…”

Section: Introductionmentioning

confidence: 99%

Dark Energy with Phantom Crossing and the H0 Tension

Valentino

Mukherjee

Sen

2021

Entropy

107

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We investigate the possibility of phantom crossing in the dark energy sector and the solution for the Hubble tension between early and late universe observations. We use robust combinations of different cosmological observations, namely the Cosmic Microwave Background (CMB), local measurement of Hubble constant (H0), Baryon Acoustic Oscillation (BAO) and SnIa for this purpose. For a combination of CMB+BAO data that is related to early universe physics, phantom crossing in the dark energy sector was confirmed at a 95% confidence level and we obtained the constraint H0=71.0−3.8+2.9 km/s/Mpc at a 68% confidence level, which is in perfect agreement with the local measurement by Riess et al. We show that constraints from different combinations of data are consistent with each other and all of them are consistent with phantom crossing in the dark energy sector. For the combination of all data considered, we obtained the constraint H0=70.25±0.78 km/s/Mpc at a 68% confidence level and the phantom crossing happening at the scale factor am=0.851−0.031+0.048 at a 68% confidence level.

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Can late dark energy transitions raise the Hubble constant?

Cited by 177 publications

References 25 publications

Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension

Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

Dark Energy with Phantom Crossing and the H0 Tension

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