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Dual superconductor picture is one of the most promising scenarios for quark confinement. We have proposed a new formulation of Yang-Mills theory on the lattice so that the so-called restricted field obtained from the gauge-covariant…

High Energy Physics - Lattice · Physics 2018-12-17 Akihiro Shibata , Ryutaro Matsudo , Seikou Kato , Kei-Ichi Kondo

The dual superconductor picture is one of the most promising scenarios for quark confinement. To investigate this picture in a gauge-invariant manner, we have proposed a new formulation of Yang-Mills theory, named the decomposition method,…

High Energy Physics - Lattice · Physics 2021-12-03 Akihiro Shibata , Seikou Kato , Kei-Ichi Kondo

The Abelian dominance for the string tension was shown for the fundamental sources in MA gauge in the lattice simulations. For higher representations, however, it is also known that the naive "Abelian" Wilson loop, which is defined by using…

High Energy Physics - Lattice · Physics 2018-12-17 Ryutaro Matsudo , Akihiro Shibata , Seikou Kato , Kei-Ichi Kondo

We derive a new version of the non-Abelian Stokes theorem for the Wilson loop in the SU(N) case by making use of the coherent state representation on the coset space $SU(N)/U(1)^{N-1}=F_{N-1}$, the flag space. We consider the SU(N)…

High Energy Physics - Theory · Physics 2014-11-18 Kei-Ichi Kondo , Yutaro Taira

We prove Abelian magnetic monopole dominance in the string tension of QCD. Abelian and monopole dominance in low energy physics of QCD has been confirmed for various quantities by recent Monte Carlo simulations of lattice gauge theory. In…

High Energy Physics - Theory · Physics 2014-11-18 Kei-Ichi Kondo

We investigate the relationship between colour confinement and topological structures derived from the gauge invariant Abelian (Cho-Duan-Ge) decomposition. This Abelian decomposition is made imposing an isometry on a colour field $n$ which…

High Energy Physics - Lattice · Physics 2014-01-21 Nigel Cundy , Y. M. Cho , Weonjong Lee , Jaehoon Leem

The purpose of this paper is to review the recent progress in understanding quark confinement. The emphasis of this review is placed on how to obtain a manifestly gauge-independent picture for quark confinement supporting the dual…

High Energy Physics - Theory · Physics 2015-06-11 Kei-Ichi Kondo , Seikou Kato , Akihiro Shibata , Toru Shinohara

We propose a new description of the SU(N) Yang-Mills theory on a lattice, which enables one to explain quark confinement based on the dual superconductivity picture in a gauge independent way. This is because we can define gauge-invariant…

High Energy Physics - Lattice · Physics 2010-01-21 Akihiro Shibata , Kei-Ichi Kondo , Seikou Kato , Shoichi Ito , Toru Shinohara , Takeharu Murakami

We investigate the relationship between colour confinement and the gauge independent Cho-Duan-Ge Abelian decomposition. The decomposition is defined in terms of a colour field $n$; the principle novelty of our study is that we have defined…

High Energy Physics - Lattice · Physics 2015-06-24 Nigel Cundy , Y. M. Cho , Weonjong Lee

We give a gauge-independent definition of Abelian dominance in the Wilson loop operator and a constructive proof of the Abelian dominance through a non-Abelian Stokes theorem via lattice regularization. We obtain a necessary and sufficient…

High Energy Physics - Theory · Physics 2008-01-29 Kei-Ichi Kondo , Akihiro Shibata

We derive a new version of SU(3) non-Abelian Stokes theorem by making use of the coherent state representation on the coset space $SU(3)/(U(1)\times U(1))=F_2$, the flag space. Then we outline a derivation of the area law of the Wilson loop…

High Energy Physics - Theory · Physics 2009-10-31 K. -I. Kondo , Y. Taira

We give a gauge-independent definition of magnetic monopoles in the $SU(N)$ Yang-Mills theory through the Wilson loop operator. For this purpose, we give an explicit proof of the Diakonov-Petrov version of the non-Abelian Stokes theorem for…

High Energy Physics - Theory · Physics 2016-01-06 Ryutaro Matsudo , Kei-Ichi Kondo

Using the BF version of pure Yang-Mills, it is possible to find a covariant representation of the 't Hooft magnetic flux operator. In this framework, 't Hooft's pioneering work on confinement finds an explicit realization in the continuum.…

High Energy Physics - Theory · Physics 2009-10-30 F. Fucito , M. Martellini , M. Zeni

We show that the hypothesis of abelian dominance in maximal abelian gauge, which is known to work for Wilson loops in the fundamental representation, fails for Wilson loops in higher group representations. Monte Carlo simulations are…

High Energy Physics - Lattice · Physics 2008-11-26 L. Del Debbio , M. Faber , J. Greensite , S. Olejnik

The dual Meissner effect is the promising mechanism for quark confinement. We have proposed a new formulation of SU(N) Yang-Mills (YM) theory on a lattice, which can extract the dominant mode for quark confinement in the gauge independent…

High Energy Physics - Lattice · Physics 2012-04-26 Akihiro Shibata , Kei-Ichi Kondo , Toru Shinohara

We propose the reformulations of the $SU(N)$ Yang-Mills theory toward quark confinement and mass gap. In fact, we have given a new framework for reformulating the $SU(N)$ Yang-Mills theory using new field variables. This includes the…

High Energy Physics - Theory · Physics 2014-12-30 Kei-Ichi Kondo , Seikou Kato , Akihiro Shibata , Toru Shinohara

A common approach while considering confinement is to study the dominance of an Abelian subgroup of the SU(3) gauge Links. A good way to find the Abelian component of the field is through the Cho-Guan-De gauge invariant Abelian…

High Energy Physics - Lattice · Physics 2013-11-14 Nigel Cundy , Yongmin Cho , Weonjong Lee

We show that the Wilson loop operator for SU(N) Yang-Mills gauge connection is exactly rewritten in terms of conserved gauge-invariant magnetic and electric currents through a non-Abelian Stokes theorem of the Diakonov-Petrov type. Here the…

High Energy Physics - Theory · Physics 2008-11-26 Kei-Ichi Kondo

Recently, we have developed a reformulation of the lattice Yang-Mills theory based on the change of variables a la Cho-Faddeev-Niemi combined with a non-Abelian Stokes theorem. In this talk, we give a new procedure (called reduction) for…

High Energy Physics - Lattice · Physics 2010-11-05 S. Kato , K. -I. Kondo , A. Shibata , T. Shinohara , S. Ito

We have pointed out that the $SU(3)$ Yang-Mills theory has a new way of reformulation using new field variables (minimal option), in addition to the conventional option adopted by Cho, Faddeev and Niemi (maximal option). The reformulation…

High Energy Physics - Lattice · Physics 2015-12-14 Akihiro Shibata , Kei-Ichi Kondo , Seikou Kato , Toru Shinohara
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