Isotropic cosmic birefringence from string axion domain walls without cosmic strings, and DESI results

Abstract

Recently, results from the Atacama Cosmology Telescope (ACT) DR6 have shown a preference for isotropic cosmic birefringence, consistent with previous analyses based on Planck and WMAP data. Separately, the Dark Energy Spectroscopic Instrument (DESI) DR2 results suggest that dark energy evolves over cosmic history, pointing to new physics in the late-time universe. In this paper, we propose that domain walls associated with the string axion can naturally explain the isotropic cosmic birefringence, focusing on the case in which the axion starts near a hilltop. Interestingly, to avoid the domain wall problem, these walls must form well after recombination. The predicted rotation angle, $\beta \approx 0.21c_{\gamma }$ degrees (with anomaly coefficient $c_{\gamma }\approx 1$), is in excellent agreement with observations. This scenario can be further tested by probing anisotropic birefringence of photons emitted long after recombination, as well as gravitational waves. Moreover, starting the axion oscillation from a hilltop naturally enhances its abundance via anharmonic effects, thus contributing to the dark energy component. We discuss how this hilltop axion scenario may connect with the DESI results.

21 pages, 4 figures, v3: version published in PRD

References in corpus (62)

• Exploring the Expansion History of the Universe
• Axion Cosmology
• String Axiverse
• Axions In String Theory
• Quintessence and the Rest of the World
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• Systematics of Moduli Stabilisation in Calabi-Yau Flux Compactifications
• The Low-Energy Frontier of Particle Physics
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• WISPy Cold Dark Matter
• New experimental approaches in the search for axion-like particles
• Experimental Searches for the Axion and Axion-like Particles
• The landscape of QCD axion models
• The type IIB string axiverse and its low-energy phenomenology
• The QCD Axion and Moduli Stabilisation
• New Extraction of the Cosmic Birefringence from the Planck 2018 Polarization Data
• Improved limits on the tensor-to-scalar ratio using BICEP and Planck
• An M Theory Solution to the Strong CP Problem and Constraints on the Axiverse
• New physics from the polarised light of the cosmic microwave background
• Axion Dark Matter Detection with CMB Polarization
• Cosmic Birefringence from Planck Data Release 4
• The ALP miracle: unified inflaton and dark matter
• Rotation of Linear Polarization Plane and Circular Polarization from Cosmological Pseudoscalar Fields
• Improved Constraints on Cosmic Birefringence from the WMAP and Planck Cosmic Microwave Background Polarization Data
• Interpreting DESI's evidence for evolving dark energy
• Quintessential interpretation of the evolving dark energy in light of DESI
• Axions as Quintessence in String Theory
• Superradiance in String Theory
• New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643
• Detection of isotropic cosmic birefringence and its implications for axion-like particles including dark energy
• Frequency-Dependent Constraints on Cosmic Birefringence from the LFI and HFI Planck Data Release 4
• Kilobyte Cosmic Birefringence from ALP Domain Walls
• Updated constraints on amplitude and tilt of the tensor primordial spectrum
• Calibrating Dark Energy
• Isotropic cosmic birefringence from early dark energy
• QCD Axion on Hilltop by a Phase Shift of $\pi$
• Stability of domain wall network with initial inflationary fluctuations, and its implications for cosmic birefringence
• Model-independent cosmological inference post DESI DR1 BAO measurements
• Axion Misalignment Driven to the Hilltop
• New constraint on the tensor-to-scalar ratio from the $Planck$ and BICEP/Keck Array data using the profile likelihood
• Contribution of domain wall networks to the CMB power spectrum
• Probing Axion-like Particles via CMB Polarization
• Power spectrum of domain-wall network and its implications for isotropic and anisotropic cosmic birefringence
• Cosmic Birefringence Triggered by Dark Matter Domination
• Note on moduli stabilization, supersymmetry breaking and axiverse
• Phenomenological emergent dark energy in the light of DESI Data Release 1
• Implications of the Cosmic Birefringence Measurement for the Axion Dark Matter Search
• Redshift evolution of cosmic birefringence in CMB anisotropies
• Cosmoglobe DR1 results. II. Constraints on isotropic cosmic birefringence from reprocessed WMAP and Planck LFI data
• Stochastic Axion Dark Matter in Axion Landscape
• Cosmic Microwave Background anisotropies generated by domain wall networks
• One $\mu$ to rule them all: CMB spectral distortions can probe domain walls, cosmic strings and low scale phase transitions
• Kick it like DESI: PNGB quintessence with a dynamically generated initial velocity
• Consistency of the string inspired electroweak axion with cosmic birefringence
• The QCD Axion: A Unique Player in the Axiverse with Mixings
• Probing cosmic strings by reconstructing polarization rotation of the cosmic microwave background
• Small cosmological constant from a peculiar inflaton potential
• Induced Domain Walls of QCD Axion, and Gravitational Waves
• A New Solution for the Observed Isotropic Cosmic Birefringence Angle and its Implications for the Anisotropic Counterpart through a Boltzmann Approach
• A Light QCD Axion with Hilltop Misalignment
• Tomographic constraint on anisotropic cosmic birefringence
• Isotropic cosmic birefringence from an oscillating axion-like field

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• Constraints on Generalized Gravity-Thermodynamic Cosmology from DESI DR2
• Why $w\ne -1$? Anthropic Selection in a $\Lambda$ + Axion Dark Energy Model