42 research outputs found

    Deconfinement transition and monopoles in T≠0T\neq0 SU(2)SU(2) QCD

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    The role of monopoles in the deconfinement transition is discussed in the framework of abelian projection in the maximally abelian gauge in T≠0T\neq0 SU(2)SU(2) QCD. Only one (or a few near βc\beta_c) long connected monopole loop exists uniformly through the whole lattice in each vacuum configuration in addition to some very short loops in the confinement phase and the long loop disappears in the deep deconfinement region. Energy-entropy balance of the long loops of maximally extended monopoles explains the existence of the deconfinement transition and reproduces roughly the value of the critical temperature.Comment: 23 pages (14 figures) ,late

    Inter-meson Potentials in Dual Ginzburg-Landau Theory

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    We calculate inter-meson potentials numerically by solving classical equations of motion derived from Dual Ginzburg-Landau (DGL) Theory. Inter-meson potentials in DGL theory are shown to be similar to those of the string-flip model and well reproduce behaviors of the short-range interaction at the classical level. We also compare our results with those from lattice QCD Monte carlo calculations.Comment: 18 pages, latex, 8 figure

    Monopoles and deconfinement transition in finite temperature SU(2)SU(2) QCD

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    We investigate the role of monopoles in the deconfinement transition of finite temperature SU(2)SU(2) QCD in the maximally abelian gauge. In the confinement phase a long monopole loop exists in each configuration, whereas no long loop exists in the deep deconfinement region. Balancing of the energy and the entropy of loops of the maximally extended monopoles can explain the occurrence of the deconfinement transition.Comment: 3 pages (4 figures). Contribution to Lattice '9

    Study of gauge (in)dependence of monopole dynamics

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    We investigated the gauge (in)dependence of the confinement mechanism due to monopole condensation in SU(2) lattice QCD by various abelian projections. We found (1) the string tension can be reproduced by monopoles alone also in Polyakov gauge and (2) the behaviors of the Polyakov loop at the critical temperature seem to be explained by the uniformity breaking of the monopole currents in every gauge.Comment: 4pages (7 figures), Latex, Contribution to Lattice 9

    String tension and monopoles in T≠0T \neq 0 SU(2) QCD

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    Monopole and photon contributions to abelian Wilson loops are calculated using Monte-Carlo simulations of finite-temperature SU(2)SU(2) QCD in the maximally abelian gauge. Long monopole loops alone are responsible for the behavior of the string tension in the confinement phase up to the critical βc\beta_c. Short monopole loops and photons do not contribute to the string tension. The abelian and the monopole spacial string tensions (both of which agree with the normal ones for β<βc\beta < \beta_c) show a g4(T)T2g^{4}(T) T^2 scaling behavior in the deconfinement phase. The abelian spacial string tension is in agreement with the full one even in the deconfinement phase.Comment: 10 Pages + 1 table + 8 figures, KANAZAWA 94-1

    Three topics of monopole dynamics in abelian projected QCD

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    Three topics about monopole dynamics after abelian projection are reported. The first is the new and detailed analyses of SU(2)SU(2) monopole action obtained after the block-spin transformation on the dual lattice. The b=na(β)b=na(\beta) dependence for all couplings are well fitted with a universal curve. The distance dependence of the couplings is well reproduced by a massive propagator with the mass m=0.8m=0.8 in unit of bb. The second is the SU(3)SU(3) monopole action recently obtained. The third is new interesting gauges showing abelian and monopole dominances as in the maximally abelian gauge.Comment: Talk presented at LATTICE96(topology), 4 Pages, 7 eps figure

    Human NINEIN polymorphism at codon 1111 is associated with the risk of colorectal cancer

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    NINEIN serves an essential role in centrosome function as a microtubule organizing center, and in the reformation of the interphase centrosome architecture following mitosis. In the present study, the association between NINEIN Pro1111Ala (rs2236316), a missense single nucleotide polymorphism, and the risk of colorectal cancer (CRC), related to smoking and alcohol consumption habits in 200 patients with CRC and 1,141 cancer‑free control participants were assessed in a case‑control study performed in Japan. The results showed that the NINEIN Ala/Ala genotype compared with the Pro/Pro genotype was significantly more associated with an increased risk of CRC, and the males with the Ala/Ala genotype exhibited a significantly increased risk of CRC compared with those with Pro/Pro and Pro/Ala genotypes. Stratified analyses of the Ala/Ala genotype with CRC risk further showed an increased association in never/light drinkers (<23 g of ethanol/day), in male never/light drinkers and in male patients with rectal cancer. These findings suggest that the genetic variant of the NINEIN Pro1111Ala polymorphism has a significant effect on CRC susceptibility in the Japanese population
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