Domain-Wall Problem · Overclosure
unseel.com · Z₂ vacua · walls · ρ ∝ 1/t
Zel'dovich '74 σ⅓ ≲ 1 MeV
Wall share 0%
phase
Vacuum φ = +v
Vacuum φ = −v
Domain wall (φ = 0)
True vacuum (bias)
Unseel.com · The Cosmic Domain-Wall Problem