Wed·Nov 16, 2005Wednesday·November 16, 2005

1. 01*

   Gauge invariance of the dual Meissner effect in QCD

   Tsuneo Suzuki🇯🇵 · Katsuya Ishiguro🇯🇵 · Yoshifumi Nakamura🇯🇵 · Toru Sekido🇯🇵

   The dual Meissner effect is described and numerically observed in a gauge-invariant way in lattice Monte-Carlo simulations of pure SU(2) QCD. A gauge-invariant Abelian-like field strength is defined in terms of a unit-vector in color space which is constructed by a non-Abelian field strength itself. A gauge-invariant monopole-like quantity is defined by a violation of the Bianchi identity with respect to the Abelian-like field strength. The squeezing of the non-Abelian electric field $\sqrt{{\sum }_a(E_i^a{)}^2}$ between a pair of static quark and anti-quark occurs due to the solenoidal current coming from the gauge-invariant monopole-like quantity. An equation similar to the dual London equation is confirmed approximately in the long-range region.

   hep-lat0 citations
2. 02*

   Gauge invariant 'monopoles' and color confinement mechanism

   Tsuneo Suzuki🇯🇵 · Katsuya Ishiguro🇯🇵 · Yoshifumi Nakamura🇯🇵 · Toru Sekido🇯🇵

   The dual Meissner effect is described and numerically observed in a gauge-invariant way in lattice Monte-Carlo simulations of pure SU(2) QCD. A gauge-invariant monopole-like quantity on the lattice is defined by a gauge-invariant Abelian-like field strength. The Abelian-like field strength is expressed in terms of a unit-vector in color space which is constructed by a non-Abelian field strength itself. It is just equal to the absolute value of the corresponding non-Abelian field strength except for the sign. In this note we show the theoretical background and most numerical results will be published in a separate report \cite{Suzuki:2005lat052} in this conference.

   hep-latPoS(2006)·0 citations
3. 03*

   Gauge invariance of the Abelian dual Meissner effect in pure SU(2) QCD

   Toru Sekido🇯🇵 · Katsuya Ishiguro🇯🇵 · Yoshifumi Nakamura🇯🇵 · Tsuneo Suzuki🇯🇵

   The dual Meissner effect is described and numerically observed in a gauge-invariant way in lattice Monte-Carlo simulations in pure SU(2) QCD. The squeezing of the non-Abelian electric field between a pair of static quark and anti-quark occurs due to the solenoidal current coming from the gauge-invariant monopole-like quantity. Preliminary results are obtained with respect to the vacuum type of the confinement phase. The SU(2) QCD vacuum seems near the border between the type 1 and the type 2 dual superconductors. The theoretical background of this idea is published in another report \cite{Suzuki:2005lat051}. Here we show numerical results in this note.

   hep-latPoS(2006)·1 citation
4. 04*

   Mesons at high temperature in Nf=2 QCD

   Gert Aarts🇬🇧 · Chris Allton🇬🇧 · Richie Morrin🇮🇪 · Alan O Cais🇮🇪 · Mehmet Bugrahan Oktay🇮🇪 · Mike Peardon🇮🇪 · Jon-Ivar Skullerud🇮🇪

   We report first results for spectral functions of charmonium in 2-flavour QCD. The spectral functions are determined from vector and pseudoscalar correlators on a dynamical, anisotropic lattice. J/psi and eta_c are found to survive well into the deconfined phase before melting away at T<~2T_c. Current systematic uncertainties prevent us from drawing any definite conclusions at this stage.

   hep-latNucl.Phys.B Proc.Suppl.(2006)·5 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.