REVIEW 6 cited by
Stability of domain wall network with initial inflationary fluctuations, and its implications for cosmic birefringence
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
We study the formation and evolution of domain walls with initial inflationary fluctuations by numerical lattice calculations that, for the first time, correctly take into account correlations on superhorizon scales. We find that, contrary to the widely-held claim {over the past few tens of years}, the domain wall network exhibits remarkable stability even when the initial distribution is largely biased toward one of the minima. This is due to the fact that the domain wall network retains information about initial conditions on superhorizon scales, and that the scaling solution is not a local attractor in this sense. Our finding immediately implies that such domain walls will have a significant impact on cosmology, including the production of gravitational waves, baryogenesis, and dark matter from domain walls. Applying this result to the axion-like particle domain wall, we show that it not only explains the isotropic cosmic birefringence suggested by the recent analysis, but also predicts anisotropic cosmic birefringence that is nearly scale-invariant on large scales and can be probed by future CMB observations.
Forward citations
Cited by 6 Pith papers
-
Constant Scaling Fails for Global Monopole Networks
Global monopole networks exhibit logarithmic growth in the number-density parameter ξ rather than constant scaling, with fractional response γ ≈ 0.5 for blue-tilted initial spectra.
-
Biased Domain Wall Networks and their Gravitational Waves
Population-biased domain wall networks annihilate at T_ann ~ T_s B_s^0.8 and emit a single-broken-power-law gravitational-wave spectrum peaking near twice the Hubble scale.
-
Sign-Flipping Axion Potentials via Kapitza-Type Modulation by Heavy Axions
Coherent oscillations of a heavy axion change the sign of a light axion's effective potential, trapping it in a false vacuum and boosting its dark matter abundance.
-
Bias with a Timer: Axion Domain Wall Decay and Dark Matter
A light spectator field first creates and later disables an extra axion potential, letting axion domain walls decay and matching dark matter at larger decay constants.
-
Direct Detection of Cosmic Walls with Paleo Detectors
Ancient minerals could preserve parallel damage tracks left by a passing cosmic wall, enabling a direct search for these rare objects with paleo detectors.
-
About electroweak domain walls in Majoron models
Electroweak instantons alone do not produce Majoron domain walls; a tiny instanton mass from B+L breaking is cosmologically negligible and can act as a bias or dark energy.
Discussion (0). Sign in to comment.