A bstract Chiral magnets with the Dzyaloshinskii-Moriya (DM) interaction have received
quite an intensive focus in condensed matter physics because of the presence of a chiral …

We clarify relations among topological solitons in various dimensions: a domain wall, non-
Abelian vortex, magnetic monopole, and Yang-Mills instanton, together with a (non-Abelian) …

A bstract We study classical configurations in the\(\mathbb {C}\) PN− 1 model on\(\mathbb
{R}\) 1× S 1 with twisted boundary conditions. We focus on specific configurations composed …

QCD is expected to be in the color-flavor locking phase in high baryon density, which
exhibits color superconductivity. The most fundamental topological objects in the color …

Color magnetic flux tubes appear in the color-flavor locked phase of high density QCD,
which exhibits color superconductivity as well as superfluidity. They are non-Abelian …

A bstract We compute multi-instanton amplitudes in the sine-Gordon quantum mechanics
(periodic cosine potential) by integrating out quasi-moduli parameters corresponding to …

We classify bions in the Grassmann sigma model (including the model) on with twisted
boundary conditions. We formulate these models as gauge theories with flavors in the …

A bstract Bions are multiple fractional instanton configurations with zero instanton charge
playing important roles in quantum field theories on a compactified space with a twisted …

We construct the general vortex solution in the color–flavor-locked vacuum of a non-Abelian
gauge theory, where the gauge group is taken to be the product of an arbitrary simple group …

We study a Skyrme-type model with a quadratic potential for a field with S 2 vacua. We
consider two flavors of the model, the first is the Skyrme model and the second has a sixth …