24 citations · 44 across the 2 of their papers we have counts for
6 papers
Isolated Skyrmions in the nonlinear -model with a Dzyaloshinskii-Moriya type interaction
Yutaka Akagi, Yuki Amari, Nobuyuki Sawado +1
We study two dimensional soliton solutions in the nonlinear -model with a Dzyaloshinskii-Moriya type interaction. First, we derive such a model as a continuous limit of t…
Topological Invariant for Bosonic Bogoliubov-de Gennes Systems with Disorder
Yutaka Akagi
Using the method of noncommutative geometry, we define a topological invariant in disordered bosonic Bogoliubov-de Gennes systems, which possess a unique mathematical property---no…
Three-dimensional topological magnon systems
Hiroki Kondo, Yutaka Akagi, Hosho Katsura
We propose a class of models for a magnonic analog of topological insulators in three dimensions. The models have pseudo-time-reversal symmetry which ensures the existence of boson…
Transforming Generalized Ising Model into Boltzmann Machine
Nobuyuki Yoshioka, Yutaka Akagi, Hosho Katsura
We find an exact mapping from the generalized Ising models with many-spin interactions to equivalent Boltzmann machines, i.e., the models with only two-spin interactions between ph…
Topological Invariant for Magnon Spin Hall Systems
Hiroki Kondo, Yutaka Akagi, Hosho Katsura
We propose a definition of a topological invariant for magnon spin Hall systems which are the bosonic analog of two-dimensional topological insulators in class AII.…
A New Numerical Method for Topological Insulators with Strong Disorder
Yutaka Akagi, Hosho Katsura, Tohru Koma
We propose a new method to numerically compute the indices for disordered topological insulators in Kitaev's periodic table. All of the indices are kn…