51 citations · 480 across the 60 of their papers we have counts for
61 papers
Soliton solution of a gravitating chiral quark soliton model: dynamical fermion and Dirac-sea in general relativity
Ryoma Mizutani, Daiki Niiyama, Nobuyuki Sawado
In this paper, we study Einstein-Dirac system based on a Dirac fermion coupled with a nonlinear chiral field on static spherically symmetric spacetime. Gravitational effects on the…
Topological Charge Asymmetry in a Skyrmion-Fermion Coupled System
Yuki Amari, Nobuyuki Sawado, Shintaro Yamamoto
Topology plays a central role in classifying solitonic configurations in field theories, providing robustness and a nonperturbative label, the so-called topological charge . In…
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…
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…
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…
Spectral flow of fermions in the $\CP^2$ (anti-)instanton, and the sphaleron with vanishing topological charge
Yuki Amari, Nobuyuki Sawado, Shintaro Yamamoto
The spectral flow is ubiquitous in the physics of soliton-fermion interacting systems. We study the spectral flows related to a continuous deformation of background soliton solutio…