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arXiv · hep-ph/0407123

Hadron Physics and Confinement Physics in Lattice QCD

H. Suganuma·K. Amemiya·H. Ichie·N. Ishii·H. Matsufuru·N. Nakajima·Y. Nemoto·M. Oka·T. T. Takahashi
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Abstract

We are aiming to construct Quark Hadron Physics and Confinement Physics based on QCD. Using SU(3)$_c$ lattice QCD, we are investigating the three-quark potential at T=0 and $T \ne 0$, mass spectra of positive and negative-parity baryons in the octet and the decuplet representations of the SU(3) flavor, glueball properties at T=0 and $T \ne 0$. We study also Confinement Physics using lattice QCD. In the maximally abelian (MA) gauge, the off-diagonal gluon amplitude is strongly suppressed, and then the off-diagonal gluon phase shows strong randomness, which leads to a large effective off-diagonal gluon mass, $M_{\rm off} \simeq 1.2 {\rm GeV}$. Due to the large off-diagonal gluon mass in the MA gauge, infrared QCD is abelianized like nonabelian Higgs theories. In the MA gauge, there appears a macroscopic network of the monopole world-line covering the whole system. From the monopole current, we extract the dual gluon field $B_μ$, and examine the longitudinal magnetic screening. We obtain $m_B \simeq$ 0.5 GeV in the infrared region, which indicates the dual Higgs mechanism by monopole condensation. From infrared abelian dominance and infrared monopole condensation, low-energy QCD in the MA gauge is described with the dual Ginzburg-Landau (DGL) theory.

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H. Suganuma, K. Amemiya, H. Ichie, N. Ishii, H. Matsufuru, N. Nakajima, Y. Nemoto, M. Oka, T. T. Takahashi. 2004-07-10. Hadron Physics and Confinement Physics in Lattice QCD. https://doi.org/10.1063/1.1425524

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