Cosmic Microwave Background anisotropies generated by domain wall networks

Abstract

We develop a numerical tool for the fast computation of the temperature and polarization power spectra generated by domain wall networks, by extending the publicly available CMBACT code --- that calculates the CMB signatures generated by active sources --- to also describe domain wall networks. In order to achieve this, we adapt the Unconnected Segment model for cosmic strings to also describe domain wall networks, and use it to model the energy-momentum of domain wall networks throughout their cosmological history. We use this new tool to compute and study the TT, EE, TE and BB power spectra generated by standard domain wall networks, and derive a conservative constraint on the energy scale of the domain wall-forming phase transition of $\upeta <0.92\,\,{\rm MeV}$ (which is a slight improvement over the original Zel'dovich bound of $1\mathrm{MeV}$).

10 pages, 5 figures. Submitted to PRD

References in corpus (12)

• Constraints on Supersymmetric Models of Hybrid Inflation
• CMB polarization power spectra contributions from a network of cosmic strings
• Dynamics of domain wall networks with junctions
• Frustrated Expectations: Defect Networks and Dark Energy
• Contribution of domain wall networks to the CMB power spectrum
• The Wall of Fundamental Constants
• CMB power spectrum of Nambu-Goto cosmic strings
• p-brane dynamics in (N+1)-dimensional FRW universes: a unified framework
• Domain wall network evolution in (N+1)-dimensional FRW universes
• Observational Constraints on Varying-alpha Domain Walls
• Runaway Domain Wall and Space-time Varying alpha
• The bispectrum of matter perturbations from cosmic strings

Cited by in corpus (21)

• Unveiling the Dynamics of the Universe
• A CMB Millikan Experiment with Cosmic Axiverse Strings
• Power spectrum of domain-wall network and its implications for isotropic and anisotropic cosmic birefringence
• A Solution to the electroweak horizon problem in the R_h=ct universe
• Stretching and Kibble scaling regimes for Hubble-damped defect networks
• CMB anisotropies generated by cosmic string loops
• Domain wall annihilation -- a QFT perspective
• Isotropic cosmic birefringence from string axion domain walls without cosmic strings, and DESI results
• A Measurement of the Cosmic Expansion Within our Lifetime
• Thermodynamics of Cosmic Defect Network Evolution
• Comparing parametric and non-parametric velocity-dependent one-scale models for domain wall evolution
• Parameter-free velocity-dependent one-scale model for domain walls
• Exact solutions of domain wall junctions in arbitrary dimensions
• The Electroweak Horizon Problem
• Fundamental physics tests using the propagation of GNSS signals
• Axion string signatures II: A cosmological plasma collider
• Phantom Domain Walls
• Planar domain walls in black hole spacetimes
• Freezing lakes as analogue models of $\Lambda$CDM cosmology and beyond
• Gravitational Wave Mountains: current-carrying domain walls
• Biased Domain Walls and the Origin of Early Massive Structures