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hep-th2025
Skyrmion with Fermion Backreaction
Yuki Amari, Nobuyuki Sawado, Shintaro Yamamoto
When fermions interact with a topological soliton, they localize on the soliton. In studies of such systems, solitons are often treated as fixed background fields, and the backreac…
nlin.CD2025
PINNs Study for the Bekki-Nozaki Chaos in the Non-linear Schrödinger equation
N. Sawado, Y. Shimazaki, Y. Suzuki
In this paper we study chaotic behavior in the forced dissipative non-linear Schrödinger equation, so called the Bekki-Nozaki equation. Chaotic systems are often seen in a strong s…
gr-qc2025
Multishell Dirac fermions in the Einstein-Dirac system
Shunsuke Iwasawa, Nobuyuki Sawado
We present multifermions in the spherically symmetric Einstein-Dirac system. Dirac fermions are self-localized within a spherically symmetric Einstein gravity, i.e., the Schwarzsch…