Exact kink solutions of the (ψlnψ)² field theory have super-exponential tails, a single zero mode, and no negative bound states, making them the first known kinks with super-exponential profiles.
Rajaraman, “Solitons and Instantons, Elsevier, Amsterdam, Netherlands (1982)
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A model field theory with $(\psi \ln \psi)^2$ potential: Kinks with super-exponential profiles
Exact kink solutions of the (ψlnψ)² field theory have super-exponential tails, a single zero mode, and no negative bound states, making them the first known kinks with super-exponential profiles.