Cosmic Birefringence and Electroweak Axion Dark Energy

Abstract

Taking the recently reported non-zero rotation angle of the cosmic microwave background (CMB) linear polarization $\beta =0.35\pm 0.14\mathrm{deg}$ as the hint for a pseudo Nambu-Goldstone boson quintessence dark energy (DE), we study the electroweak (EW) axion quintessence DE model where the axion mass is generated by the EW instantons. We find that the observed value of $\beta$ implies a non-trivial $U(1)$ electromagnetic anomaly coefficient ($c_{\gamma }$), once the current constraint on the DE equation of state is also taken into account. With the aid of the hypothetical high energy structure of the model inspired by the experimentally inferred $c_{\gamma }$, the model is shown to be able to make prediction for the current equation of state ($w_{\mathrm{DE},0}$) of the quintessence DE. This is expected to make our scenario distinguishable in comparison with the cosmological constant ($w=-1$) and testable in future when the error in the future measurement of $w_{\mathrm{DE},0}$ is reduced to $\mathcal{O}(1)\%$ level ($\delta w=\mathcal{O}(10^{-2})$).

arXiv comment5 pages, 1 table, 1 figure

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Cited by in corpus (15)

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• Isotropic cosmic birefringence from early dark energy
• Power spectrum of domain-wall network and its implications for isotropic and anisotropic cosmic birefringence
• Implications of the Cosmic Birefringence Measurement for the Axion Dark Matter Search
• Cosmic Birefringence from Monodromic Axion Dark Energy
• Novel constraints on fifth forces and ultralight dark sector with asteroidal data
• Gravitational waves and neutrino oscillations in Chern-Simons axion gravity
• Probing Axions through Tomography of Anisotropic Cosmic Birefringence
• Consistency of the string inspired electroweak axion with cosmic birefringence
• Electroweak axion in light of GRB221009A
• High-quality axions in a class of chiral $U(1)$ gauge theories
• High Quality Axion in Supersymmetric Models
• The anomalous shift of the weak boson mass and the quintessence electroweak axion