56 citations · 166 across the 26 of their papers we have counts for
16 papers · 1 filter
On cusps in the potential
Ryuichiro Kitano, Ryutaro Matsudo, Lukas Treuer
The large analysis of QCD states that the potential for the meson develops cusps at , , , with the number of flavors. Furthermore, the…
Boundary condition and reflection anomaly in dimensions
Jiunn-Wei Chen, Chang-Tse Hsieh, Ryutaro Matsudo
It is known that the d single Majorana fermion theory has an anomaly of the reflection, which is canceled out when 16 copies of the theory are combined. Therefore, it is expec…
Understanding anomalous particle production in massless QED via time-varying angle
Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo +1
The Maxwell equations imply that, under the background of non-zero , varying term produces . An interesting example is the…
Missing final state puzzle in the monopole-fermion scattering
Ryuichiro Kitano, Ryutaro Matsudo
It has been known that when a charged fermion scatters off a monopole, the fermion in the -wave component must flip its chirality, i.e., fermion number violation must happen. Th…
Vector mesons on the wall
Ryuichiro Kitano, Ryutaro Matsudo
A domain-wall configuration of the meson bounded by a string (called a pancake or a Hall droplet) is recently proposed to describe the baryons with spin . In order to u…
Complex poles, spectral function and reflection positivity violation of Yang-Mills theory
Kei-Ichi Kondo, Yui Hayashi, Ryutaro Matsudo +2
We discuss the analytic continuation of the gluon propagator from the Euclidean region to the complex squared-momentum plane towards the Minkowski region from a viewpoint of gluon…
Reflection positivity and complex analysis of the Yang-Mills theory from a viewpoint of gluon confinement
Kei-Ichi Kondo, Masaki Watanabe, Yui Hayashi +2
In order to understand the confining decoupling solution of the Yang-Mills theory in the Landau gauge, we consider the massive Yang-Mills model which is defined by just adding a gl…
Mass-deformed Yang-Mills theory in the covariant gauge and its gauge-invariant extension through the gauge-independent BEH mechanism
Kei-Ichi Kondo, Yutaro Suda, Masaki Ohuchi +2
In this talk we consider the mass-deformed Yang-Mills theory in the covariant gauge which is obtained by just adding a gluon mass term to the Yang-Mills theory with the covariant g…
Composite operator and condensate in Yang-Mills theory with stability group
Matthias Warschinke, Ryutaro Matsudo, Shogo Nishino +2
Recently, a reformulation of the Yang-Mills theory inspired by the Cho-Faddeev-Niemi decomposition has been developed in order to understand confinement from the viewpoint…
Magnetic monopoles in pure Yang--Mills theory with a gauge-invariant mass
Shogo Nishino, Ryutaro Matsudo, Matthias Warschinke +1
In this paper, we show the existence of magnetic monopoles in the pure Yang--Mills theory even in absence of scalar fields when the gauge-invariant mass term is introduced.…
Double-winding Wilson loop in Yang-Mills theory: A criterion for testing the confinement models
Ryutaro Matsudo, Kei-Ichi Kondo, Akihiro Shibata
We examine how the average of double-winding Wilson loops depends on the number of color in the Yang-Mills theory. In the case where the two loops and are i…
Composite operator and condensate in the Yang-Mills theory with stability group
Matthias Warschinke, Ryutaro Matsudo, Shogo Nishino +2
Recently, some reformulations of the Yang-Mills theory inspired by the Cho-Faddeev-Niemi decomposition have been developed in order to understand confinement from the viewpoint of…
Double-winding Wilson loops in the Yang-Mills theory
Ryutaro Matsudo, Kei-Ichi Kondo
We consider double-winding, triple-winding and multiple-winding Wilson loops in the Yang-Mills gauge theory. We examine how the area law falloff of the vacuum expectation v…
Dyon and magnetic monopole in Yang--Mills theory derived through the complementary gauge-scalar model
Shogo Nishino, Ryutaro Matsudo, Matthias Warschinke +1
We show that dyon and magnetic monopole can be constructed in the gauge-independent way for the Yang--Mills theory even in the absence of the scalar field. This result is d…
Gauge-covariant decomposition and magnetic monopole for G(2) Yang-Mills field
Ryutaro Matsudo, Kei-Ichi Kondo
We give a gauge-covariant decomposition of the Yang-Mills field with an exceptional gauge group , which extends the field decomposition invented by Cho, Duan-Ge, and Faddeev-…
Non-Abelian Stokes theorem for the Wilson loop operator in an arbitrary representation and its implication to quark confinement
Ryutaro Matsudo, Kei-Ichi Kondo
We give a gauge-independent definition of magnetic monopoles in the Yang-Mills theory through the Wilson loop operator. For this purpose, we give an explicit proof of the D…