The implications of inflation for the last ACT
2025/10/21 by Qiu, Zhi-Chong, Pang, Ye-Huang, Huang, Qing-Guo · 2 citations
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences
paper · doi:10.48550/arxiv.2510.18320
Abstract
We explored a parameterized slow-roll inflationary model within the ΛCDM framework, utilizing a combination of data from Planck 2018, ACT DR6, DESI DR2, and BICEP/Keck 2018 (P-ACT-LB-BK18). Additionally, we incorporated the SH0ES prior on H0 (P-ACT-LB-BK18-H0) to analyze the model within the early dark energy (EDE) framework. While the model with a potential V(ϕ)∝ ϕα for small values of α still fits the data, the Starobinsky R2 inflation falls outside the 2σ region. On the other hand, in a self-consistent quantum theory of gravity, higher-order corrections to R are typically anticipated. In response, we proposed a non-perturbative exponential f(R) inflation model, wherein the subleading corrections beyond R2 including terms like R3 or R4. Using numerical calculations and Markov Chain Monte Carlo (MCMC) analysis with the P-ACT-LB-BK18 data set, we demonstrate that this model can align well with the ACT-preferred value of the scalar spectral index. Additionally, within the early dark energy (EDE) framework, it accommodates greater deviations from the original Starobinsky R2 inflation model when incorporating the SH0ES prior on H0.
Citations
- Loop quantum inflation with inverse volume corrections in light of ACT data
- Radiative-Corrected Higgs Inflation in Light of the Latest ACT Observations
- Testing ns=1 in light of the latest ACT and SPT data
- Heavy Field Effects on Inflationary Models in Light of ACT Data
- Genesis--Starobinsky inflation can explain the ACT data
- The R2-Higgs inflation: R3 contribution and preheating after ACT and SPT data
- Alexei Starobinsky and Modern Cosmology
- Power-law F(R) Gravity as Deformations to Starobinsky Inflation in View of ACT
- Inflationary Models with Gauss-Bonnet Coupling in Light of ACT Observations
- Split supersymmetry and hybrid inflation in light of Atacama Cosmology Telescope DR6 data
- Galaxy Rotation Curves as Measurements of the CMB Spectral Index
- Power Law Plateau Inflation and Primary Gravitational Waves in the light of ACT
- ACT-Inspired Kaehler-Based Inflationary Attractors
- Resurrecting Vanilla Power Law Inflation with the aid of Continuous Spontaneous Localization in the ACT era
- The fate of Quasi-Exponential inflation in the light of ACT-DR6
- Observational constraints on inflationary models with non-minimally derivative coupling by ACT
- Smooth hybrid inflation in light of ACT DR6 data
- Inflationary attractors and radiative corrections in light of ACT data
- α-attractor inflation modified by GUP in light of ACT observations
- Primordial Black Holes Save R2 Inflation
- Nonminimal infrared gravitational reheating in light of ACT observation
- Kinetically Modified Palatini Inflation Meets ACT Data
- Minimal Plateau Inflation in light of ACT DR6 Observations
- Are single-field models of inflation and PBHs production ruled out by ACT observations?
- Constraining Reheating Temperature, Inflaton-SM Coupling and Dark Matter Mass in Light of ACT DR6 Observations
- On the Present Status of Inflationary Cosmology
- Curvature corrections to Starobinsky inflation can explain the ACT results
- Approximate reconstruction of inflationary potential with ACT observations
- ACT-ing on inflation: Implications of non Bunch-Davies initial condition and reheating on single-field slow roll models
- Starobinsky like inflation and EGB Gravity in the light of ACT
- Improved Predictions on Higgs-Starobinsky Inflation and Reheating with ACT DR6 and Primordial Gravitational Waves
- Keeping the relation between the Starobinsky model and no-scale supergravity ACTive
- Higgs-like inflation under ACTivated mass
- Reheating ACTs on Starobinsky and Higgs inflation
- Refined Predictions for Starobinsky Inflation and Post-inflationary Constraints in Light of ACT
- Increase of ns in regularized pole inflation & Einstein-Cartan gravity
- Supersymmetric Hybrid Inflation in light of Atacama Cosmology Telescope Data Release 6, Planck 2018 and LB-BK18
- Palatini Linear Attractors Are Back in ACTion
- Independent connection in ACTion during inflation
- Has ACT measured radiative corrections to the tree-level Higgs-like inflation?
- Fractional attractors in light of the latest ACT observations
- Is the CMB revealing signs of pre-inflationary physics?
- The early universe is ACT-ing warm
- Higgs-Modular Inflation
- The Impact of the Hubble Tension on the Evidence for Dynamical Dark Energy
- ACT, SPT, and chaotic inflation
- DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
- The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and ΛCDM Parameters
- The Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models
- DESI 2024 VI: cosmological constraints from the measurements of baryon acoustic oscillations
- Starobinsky Inflation in the Swampland
- Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies
- Improved Constraints on Primordial Gravitational Waves using <i>Planck</i>, WMAP, and BICEP/<i>Keck</i> Observations through the 2018 Observing Season
- In the realm of the Hubble tension—a review of solutions <sup>*</sup>
- <i>Planck</i> 2018 results
- CMB-S4 Science Book, First Edition
- Inference from Iterative Simulation Using Multiple Sequences
- A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems
- A new type of isotropic cosmological models without singularity
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