English
Related papers

Related papers: Visualization of topological objects in QCD

200 papers

In the last years it turned out that instantons and monopoles have a certain local correlation in four-dimensional QCD. It was demonstrated by several groups independently and by different methods that at the locations of instantons also…

High Energy Physics - Lattice · Physics 2009-10-30 Markus Feurstein , Harald Markum , Stefan Thurner

We analyze the interplay of topological objects in four-dimensional QCD on the lattice. The distributions of color magnetic monopoles in the maximum abelian gauge are computed around instantons in both pure and full QCD. We find an enhanced…

High Energy Physics - Lattice · Physics 2007-05-23 M. Feurstein , H. Markum , S. Thurner

We analyze the interplay of topological objects in four dimensional QCD. The distributions of color magnetic monopoles obtained in the maximum abelian gauge are computed around instantons in both pure and full QCD. We find an enhanced…

High Energy Physics - Lattice · Physics 2007-05-23 S. Thurner , M. Feurstein , H. Markum

We analyze the relation between instantons and abelian projected monopoles in both phases of pure QCD by calculating local correlation functions between topological charge densities and monopole densities. On an $8^{3} \times 4$ lattice, it…

High Energy Physics - Lattice · Physics 2009-10-28 H. Markum , W. Sakuler , S. Thurner

We analyze topological objects in pure gluonic $SU(2)$ lattice gauge theory and compute correlation functions between instantons and monopoles. Concerning the instantons we use geometric and field theoretic definitions of the topological…

High Energy Physics - Lattice · Physics 2009-10-28 M. Feurstein , H. Markum , St. Thurner

We compute instanton sizes and study correlation functions between instantons and monopoles in maximum abelian projection within SU(2) lattice QCD at finite temperature. We compare several definitions of the topological charge, different…

High Energy Physics - Lattice · Physics 2009-10-30 M. Feurstein , H. Markum , S. Thurner

The correlation between instantons and QCD-monopoles is studied both in the lattice gauge theory and in the continuum theory. An analytical study in the Polyakov-like gauge, where $A_4(x)$ is diagonalized, shows that the QCD-monopole…

High Energy Physics - Lattice · Physics 2009-10-28 Hideo Suganuma , Atsunori Tanaka , Shoichi Sasaki , Osamu Miyamura

We study the correlation between instantons and QCD-monopoles both in the lattice gauge theory and in the multi-instanton system using the maximally abelian gauge. First, we find the existence of an almost linear correlation between the…

High Energy Physics - Lattice · Physics 2007-05-23 Shoichi Sasaki , Masahiro Fukushima , Atsunori Tanaka , Hideo Suganuma , Hiroshi Toki , Osamu Miyamura , Dmitri Diakonov

We study the Abelian projection of SU(2) instantons in the Maximally Abelian gauge. We find that in this gauge an isolated instanton produces a closed monopole loop within its core and the size of this loop increases with the core size. We…

High Energy Physics - Lattice · Physics 2009-10-28 A. Hart , M. Teper

We study the relation between instantons and monopoles in the abelian gauge. First, we investigate the monopole in the multi-instanton solution in the continuum Yang-Mills theory using the Polyakov gauge. At a large instanton density, the…

High Energy Physics - Lattice · Physics 2009-10-28 H. Suganuma , S. Sasaki , H. Ichie , F. Araki , O. Miyamura

The correlation between instantons and QCD-monopoles is studied both in the lattice gauge theory and in the continuum theory. From a simple topological consideration, instantons are expected to live only around the QCD-monopole trajectory…

High Energy Physics - Phenomenology · Physics 2008-02-03 H. Suganuma , K. Itakura , H. Toki , O. Miyamura

We investigate the monopole-instanton correlation in SU(2) lattice gauge theory using a renormalisation group inspired smoothing technique. We look at the properties of monopole clusters and their correlation with instantons. Since the…

High Energy Physics - Lattice · Physics 2009-10-31 Tamas G. Kovacs , Zsolt Schram

We investigate the Maximally Abelian (MA) Projection for a single $SU(2)$ instanton in continuum gauge theory. We find that there is a class of solutions to the differential MA gauge condition with circular monopole loops of radius $R$…

High Energy Physics - Lattice · Physics 2009-10-28 R. C. Brower , K. N. Orginos , C-I Tan

We consider the superposition of infinitely many instantons on a circle in R^4. The construction yields a self-dual solution of the Yang-Mills equations with action density concentrated on the ring. We show that this configuration is…

High Energy Physics - Theory · Physics 2009-11-10 Falk Bruckmann , Doerte Hansen

Certain static soliton configurations of gauge fields in 4+1 dimensions correspond to the instanton in 4-Euclidean dimensions ``turned on its side,'' becoming a monopole in 4+1. The periodic instanton solution can be used with the method of…

High Energy Physics - Theory · Physics 2009-10-31 Christopher T. Hill , Pierre Ramond

We study the relation between the instanton distribution and the monopole loop length in the SU(2) gauge theory with the abelian gauge fixing. We measure the monopole current from the multi-instanton ensemble on the $16^4$ lattice using the…

High Energy Physics - Lattice · Physics 2009-10-28 Masahiro Fukushima , Atsunori Tanaka , Shoich Sasaki , Hideo Suganuma , Hiroshi Toki , Dmitri Diakonov

We analyze topological objects in pure QCD in the presence of external quarks by calculating the distributions of instanton and monopole densities around static color sources. We find a suppression of the densities close to external sources…

High Energy Physics - Theory · Physics 2016-11-03 St. Thurner , H. Markum , W. Sakuler

The effects of instantons close to the cut-off is studied in four dimensional SU(2) gauge theory with higher order derivative terms in the action. It is found in the framework of the dilute instanton gas approximation that the convergence…

High Energy Physics - Theory · Physics 2007-05-23 Vincenzo Branchina , Janos Polonyi

We study the nonperturbative QCD in terms of topological objects, i.e., QCD-monopoles and instantons. In the 't Hooft abelian gauge, QCD is reduced into an abelian gauge theory with QCD-monopoles, and the confinement mechanism can be…

High Energy Physics - Phenomenology · Physics 2007-05-23 H. Suganuma , F. Araki , M. Fukushima , H. Ichie , Y. Koma , S. Sasaki , A. Tanaka , H. Toki , S. Umisedo

This study is part of a research program aimed to investigate the relations between instantons, monopoles, and chiral symmetry breaking. Monopoles are important 3-dimensional topological configurations existing in QCD, which are believed to…

High Energy Physics - Lattice · Physics 2015-03-31 Adriano Di Giacomo , Masayasu Hasegawa
‹ Prev 1 2 3 10 Next ›