A new description of lattice Yang-Mils theory and non-Abelian monopoles as the quark confiner

Details A new description of lattice Yang-Mils theory and non-Abelian monopoles as the quark confiner A new description of lattice Yang-Mils theory and non-Abelian monopoles as the quark confiner

2008-10-06

arxiv.org/abs/0810.0956v1

PoS LATTICE2008:268,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 7 figures, Talk presented at the XXVI International Symposium on Lattice Field Theory, July 14-19 2008, Williamsburg,

Scientific paper

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 magnetic monopoles which are inherent in the Wilson loop operator. For SU(3) there are two options: the minimal option with a single type of non-Abelian magnetic monopole characterized by the maximal stability subgroup $\tilde{H}=U(2)=SU(2)\times U(1)$, and the maximal one with two types of Abelian magnetic monopoles characterized by the maximal torus subgroup $\tilde{H}=U(1)\times U(1)$. The maximal option corresponds to a gauge independent reformulation of the Abelian projection represented by the conventional MAG. In the minimal option, we have successfully performed the numerical simulation of the SU(3) Yang-Mills theory on a lattice. We give preliminary numerical results showing the dominance of the non-Abelian magnetic monopole in the string tension obtained from the Wilson loop in the fundamental representation, and the infrared dominance of a decomposed field variable for correlation functions after demonstrating the preservation of color symmetry which was explicitly broken by the conventional MAG.

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