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

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.

11 pages, to be published in Physical Review D

References in corpus (10)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Advanced LIGO
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• Exploring the Sensitivity of Next Generation Gravitational Wave Detectors
• A gravitational-wave standard siren measurement of the Hubble constant
• The TianQin project: current progress on science and technology
• Classical Tests of General Relativity: Brane-World Sun from Minimal Geometric Deformation
• Towards early dark energy and $n_s$=1 with Planck, ACT and SPT
• Solar system tests of brane world models
• Cosmological implications of $n_s\approx 1$ in light of the Hubble tension

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• Inflationary Potential as seen from Different Angles: Model Compatibility from Multiple CMB Missions
• No-go guide for the Hubble tension: late-time or local-scale new physics
• Tracking the Multifield Dynamics with Cosmological Data: A Monte Carlo approach
• Reconciling early dark energy with a Harrison-Zeldovich spectrum
• Early dark energy by dark Higgs, and axion-induced non-thermal trapping
• Testing scale-invariant inflation against cosmological data
• Does the fraction of dark matter diminish with early dark energy?
• Gravitational waves in a cyclic Universe: resilience through cycles and vacuum state
• On the nature of cosmic strings in the brane world