Axi-Higgs cosmology: Cosmic Microwave Background and cosmological tensions

Abstract

Non-canonical cosmology with an uplifted Higgs vacuum expectation value (Higgs-VEV) in the early universe is believed to provide the solution for existing tensions within the $\Lambda$CDM regime. We recently proposed a theoretical model called axi-Higgs to explore this framework. The axi-Higgs model features an ultralight axion with mass $m_a\sim 10^{-29}$ eV, which couples to the Higgs field such that the Higgs-VEV is driven by the axion background evolution. Phenomenologically, the axi-Higgs model is equivalent to $\Lambda$CDM+$m_e$+${\omega }_a$ which is defined as $\Lambda$CDM with electron mass variation and the presence of an ultralight axion. In this paper, we perform Markov Chain Monte Carlo analyses to investigate the parameter space of axi-Higgs and compare it with $\Lambda$CDM, $\Lambda$CDM+$m_e$ where only electron mass variation is allowed, and $\Lambda$CDM+${\omega }_a$ where only an ultralight axion is present. Combining observational data from Cosmic Microwave Background, Baryon Acoustic Oscillations, weak-lensing cosmic shear survey we found $H_0=69.4\pm 1.3$ km/s/Mpc, which reduces the Hubble tension to approximately $2.4\sigma$. Including data from supernovae Type IA and local Hubble measurement from SH0ES we found $H_0=71.34\pm 0.96$ km/s/Mpc. The presence of this Higgs-VEV-driving axion may be tested by atomic clock and quasar spectral measurements in the near future.

18 pages, 8 figures. Final version

References in corpus (22)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Ultralight scalars as cosmological dark matter
• Challenges for $\Lambda$CDM: An update
• The $H_0$ Olympics: A fair ranking of proposed models
• A search for ultra-light axions using precision cosmological data
• The Primordial Lithium Problem
• New Extraction of the Cosmic Birefringence from the Planck 2018 Polarization Data
• Consistency tests of $\Lambda$CDM from the early integrated Sachs-Wolfe effect: Implications for early-time new physics and the Hubble tension
• Arbitrating the $S_8$ discrepancy with growth rate measurements from Redshift-Space Distortions
• Late universe decaying dark matter can relieve the H_0 tension
• Interacting Dark Sector and Precision Cosmology
• KiDS+VIKING-450 and DES-Y1 combined: Mitigating baryon feedback uncertainty with COSEBIs
• Axion as a Cold Dark Matter candidate
• Dependence of nuclear binding on hadronic mass variation
• Primordial nucleosynthesis as a probe of fundamental physics parameters
• Dark Sector to Restore Cosmological Concordance
• Primordial nucleosynthesis with varying fundamental constants: Improved constraints and a possible solution to the Lithium problem
• Axi-Higgs Cosmology
• Roles of ${}^7$Be$(n,p{)}^7$Li resonances in big bang nucleosynthesis with time-dependent quark mass and Li reduction by a heavy quark mass
• Constraints on the electron-to-proton mass ratio variation at the epoch of reionization

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