# Testing AdS early dark energy with Planck, SPTpol, and LSS data

@article{Jiang2021TestingAE, title={Testing AdS early dark energy with Planck, SPTpol, and LSS data}, author={Junkai Jiang and Yunsong Piao}, journal={Physical Review D}, year={2021} }

The Hubble tension might be resolved by injecting a new energy component, called Early Dark Energy (EDE), prior to recombination. An Anti-de Sitter (AdS) phase around recombination can make the injected energy decay faster, which thus allows a higher EDE fraction (so larger H0) while prevents degrading the CMB fit. In this work, we test the AdS-EDE model with CMB and Large-Scale Structure (LSS) data. Our CMB dataset consists of low-` part of Planck TT spectrum and SPTpol polarization and…

## Figures and Tables from this paper

## 5 Citations

A new perspective on cosmology through Supernovae Ia and Gamma Ray Bursts

- Physics
- 2021

The actual knowledge of the structure and future evolution of our universe is based on the use of cosmological models, which can be tested through the so-called ’probes’, namely astrophysical…

Do cosmological observations allow a negative $\Lambda$?

- Physics
- 2021

In view of the recent measurement of H0 from HST and SH0ES team, we explore the possibility of existence of a negative cosmological constant in the Universe. In this regard, we consider quintessence…

Late-transition vs smooth $H(z)$ deformation models for the resolution of the Hubble crisis

- Physics
- 2021

George Alestas, ∗ David Camarena, † Eleonora Di Valentino, ‡ Lavrentios Kazantzidis, § Valerio Marra, 5, 6, ¶ Savvas Nesseris, ∗∗ and Leandros Perivolaropoulos †† Department of Physics, University of…

A No-Go guide for the Hubble tension

- 2021

Rong-Gen Cai1,2,∗ Zong-Kuan Guo1,2,3,† Shao-Jiang Wang1,‡ Wang-Wei Yu1,3,§ and Yong Zhou1¶ CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences,…

No-go guide for the Hubble tension: Late-time solutions

- PhysicsPhysical Review D
- 2022

Rong-Gen Cai1,2,3,∗ Zong-Kuan Guo1,2,3,† Shao-Jiang Wang1,‡ Wang-Wei Yu1,3,§ and Yong Zhou1¶ CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences,…

## References

SHOWING 1-10 OF 119 REFERENCES

Dark energy at early times and ACT data: A larger Hubble constant without late-time priors

- PhysicsPhysical Review D
- 2021

Recent observations using the Atacama Cosmology Telescope (ACT) have provided ground-based cosmic microwave background (CMB) maps with higher angular resolution than the Planck satellite. These have…

Early Dark Energy can Resolve the Hubble Tension.

- Physics, MedicinePhysical review letters
- 2019

This work considers two physical models for this early dark energy EDE, one involving an oscillating scalar field and another a slowly rolling field, and performs a detailed calculation of the evolution of perturbations in these models.

Quantifying discordance in the 2015 Planck CMB spectrum

- Physics
- 2015

We examine the internal consistency of the Planck 2015 cosmic microwave background (CMB) temperature anisotropy power spectrum. We show that tension exists between cosmological constant cold dark…

Constraints on Cosmological Parameters from the 500 deg2 SPTPOL Lensing Power Spectrum

- Physics
- 2019

We present cosmological constraints based on the cosmic microwave background (CMB) lensing potential power spectrum measurement from the recent 500 deg$^2$ SPTpol survey, the most precise CMB lensing…

Implication of the Hubble tension for the primordial Universe in light of recent cosmological data

- PhysicsPhysical Review D
- 2021

In pre-recombination resolutions of the Hubble tension, such as early dark energy, new physics before recombination shifts the values of relevant cosmological parameters so that the models can fit…

Consistency tests of
ΛCDM
from the early integrated Sachs-Wolfe effect: Implications for early-time new physics and the Hubble tension

- PhysicsPhysical Review D
- 2021

New physics increasing the expansion rate just prior to recombination is among the least unlikely solutions to the Hubble tension, and would be expected to leave an important signature in the early…

Early dark energy in
k
-essence

- Physics
- 2021

Early dark energy (EDE) that becomes subdominant around the epoch of matter-radiation equality can be used to ease the Hubble tension. However, there is a theoretical problem that why the energy…

Dark energy at early times, the Hubble parameter, and the string axiverse

- Physics
- 2016

Precise measurements of the cosmic microwave background (CMB) power spectrum are in excellent agreement with the predictions of the standard $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ cosmological…

Does Hubble tension signal a breakdown in FLRW cosmology?

- PhysicsClassical and Quantum Gravity
- 2021

The tension between early and late Universe probes of the Hubble constant has motivated various new FLRW cosmologies. Here, we reanalyse the Hubble tension with a recent age of the Universe…

KiDS+VIKING-450 and DES-Y1 combined: Mitigating baryon feedback uncertainty with COSEBIs

- Physics
- 2020

We present cosmological constraints from a joint cosmic shear analysis of the Kilo-Degree Survey (KV450) and the Dark Energy Survey (DES-Y1), conducted using Complete Orthogonal Sets of E/B-Integrals…