Swift-Hohenberg 1977 (Phys. Rev. A 15:319) proposed a minimal normal-form PDE capturing the essentials of Rayleigh-Bénard convection onset near threshold. Linear part: −(∇² + k_0²)² yields a dispersion σ(k) = ε − (k² − k_0²)² peaked at…
Swift-Hohenberg 1977 (Phys. Rev. A 15:319) proposed a minimal normal-form PDE capturing the essentials of Rayleigh-Bénard convection onset near threshold. Linear part: −(∇² + k_0²)² yields a dispersion σ(k) = ε − (k² − k_0²)² peaked at…