D-term inflation in braneworld models: Consistency with cosmic-string bounds and early-time Hubble tension resolving models

Chia-Min Lin

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D-term inflation in braneworld models: Consistency with cosmic-string bounds and early-time Hubble tension resolving models

Chia-Min Lin

High Energy Physics - Theory · Submitted 22 Apr 2022

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We show that natural coupling constants ($g=\lambda=0.1$) can be achieved in the case of D-term inflation on the brane.

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arXiv ID2204.10475 (version 2)

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CitationChia-Min Lin. "D-term inflation in braneworld models: Consistency with cosmic-string bounds and early-time Hubble tension resolving models." arXiv:2204.10475 (2022). https://pith.science/paper/2PKKGFSH

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.43 · human participants 0.01 · controlled comparison 0.33 · randomized assignment 0.01 · states quantitative result 0.85 · compares with prior results 0.72 · mentions code or data availability 0.02.

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We revisit D-term inflation with the bounds of the cosmic string tension from gravitational wave observations and consider the possible deviation of the spectral index compared with the $\Lambda$CDM model in light of prerecombination resolutions of the Hubble tension. D-term inflation requires very small coupling constants under these constraints. We show that natural coupling constants ($g=\lambda=0.1$) can be achieved in the case of D-term inflation on the brane.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We revisit D-term inflation with the bounds of the cosmic string tension from gravitational wave observations and consider the possible deviation of the spectral index compared with the $\Lambda$CDM model in light of prerecombination resolutions of the Hubble tension.	contribution 0.90	0.58	0.10	hedged possibility 0.49
s1	D-term inflation requires very small coupling constants under these constraints.	result 0.47	0.33	0.13	asserted 1.00
s2	We show that natural coupling constants ($g=\lambda=0.1$) can be achieved in the case of D-term inflation on the brane.	result 0.88	0.91	0.66	asserted 1.00

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The paper

Original abstract

We revisit D-term inflation with the bounds of the cosmic string tension from gravitational wave observations and consider the possible deviation of the spectral index compared with the $\Lambda$CDM model in light of prerecombination resolutions of the Hubble tension. D-term inflation requires very small coupling constants under these constraints. We show that natural coupling constants ($g=\lambda=0.1$) can be achieved in the case of D-term inflation on the brane.

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References

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Towards hybrid inflation with $n_s=1$ in light of Hubble tension and primordial gravitational waves
astro-ph.CO 2022-05 conditional novelty 5.0 of 10

Hybrid inflation ending in a waterfall instability can lift the scalar spectral index to ns = 1, reviving chaotic φ² inflation when combined with early dark energy.
The Hubble tension: A decade review
astro-ph.CO 2026-06 unverdicted novelty 3.0 of 10

Pure early or late fixes to the Hubble tension are tightly constrained; remaining options are combined early-late interacting dark energy or new physics at the local-to-homogeneous transition.

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12 arXiv papers cite this in 14 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 10 sentences without a confident label

Cites it as support 1 paper

To be as blunt as possible, we believe that inflationary model selection based on $n_s$, $α_s$, and $β_s$ is premature until the cause of the Hubble tension (as well as the CMB-BAO tension) is understood, a point which has also been stressed in other works in the cosmology literature [ref] .

Running into tension: primordial black holes from ultra-slow-roll inflation, spectral running, and the Hubble tension · Discussion · 0.98

Cites it as background 3 papers

Therefore, the inflationary model building usually involves multifield configurations as proposed recently in, for example, axion curvaton [ref] and hybrid waterfall [ref] models (see also [ref] for D-term inflation in braneworld scenario).

Reconciling early dark energy with a Harrison-Zeldovich spectrum · Introduction · 0.80
For instance, a cosmological model with $n_s=1$ – that will corresponds to the phenomenological model proposed by Harrison, Zel’dovich, and Peebles [ref] – will imply a major theoretical breakthrough, as it would imply that the origin of cosmic perturbations may lie in some unknown fundamental theory different from the standard inflationary picture or in extensions of the latter [ref] .

Is the Harrison-Zel'dovich spectrum coming back? ACT preference for $n_s \sim 1$ and its discordance with Planck · introduction · 0.94
The cosmological implications of the larger $n_s$ suggested in some of the solutions to the Hubble tension were discussed in Refs. [ref] .

Early dark energy by dark Higgs, and axion-induced non-thermal trapping · Discussion and conclusions · 0.99

What it cites · 21 sentences without a confident label

Uses data or values from 13 papers

In [ref] , the authors obtain $λ≲O(10^-4-10^-5)$.

Cosmic String from D-term Inflation and Curvaton · D-term Inflation with small coupling constants · 0.87
In [ref] , the authors obtain $g ≲2 ×10^-2$ and $λ≲3 ×10^-5$.

$D$-term inflation, cosmic strings, and consistency with cosmic microwave background measurement · D-term Inflation with small coupling constants · 0.93
Current constraint from CMB (cosmic microwave background) measurement is $Gμ<1.1 ×10^-7$ [ref] .

CMB constraints on cosmic strings and superstrings · Introduction · 1.00

Compares with 2 papers

From Eqs. ([ref]) and ([ref]), we have [equation] This implies [equation] which is much smaller than those obtained in [ref] because we have updated the experimental constraint.

$D$-term inflation, cosmic strings, and consistency with cosmic microwave background measurement · D-term Inflation with small coupling constants · 0.94
From Eqs. ([ref]) and ([ref]), we have [equation] This implies [equation] which is much smaller than those obtained in [ref] because we have updated the experimental constraint.

Cosmic String from D-term Inflation and Curvaton · D-term Inflation with small coupling constants · 0.94

Cites as background 24 papers

Among the inflationary models, D-term inflation [ref] is a supersymmetric (SUSY) realization of hybrid inflation [ref] .

Hybrid Inflation from Supergravity D Terms · Introduction · 0.98
Among the inflationary models, D-term inflation [ref] is a supersymmetric (SUSY) realization of hybrid inflation [ref] .

D-Term Inflation · Introduction · 0.98
Among the inflationary models, D-term inflation [ref] is a supersymmetric (SUSY) realization of hybrid inflation [ref] .

Hybrid Inflation · Introduction · 0.98

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