Abstract:Hadronic flux-tube solutions describing the mesonic and the baryonic states within the dual Ginzburg-Landau (DGL) theory are investigated by using the dual lattice formulation in the Weyl-symmetric approach.The shape of the flux tubes is determined by placement of the colorelectric Dirac-string singularity treated as a connected stack of quantized plaquettes in the dual lattice formulation. The Weyl symmetric profiles of the hadronic flux tubes are obtained by using the manifestly Weyl invariant representation… Show more
“…i (i, i, 0) (i, i, i) (2i, i, 0) 1 0.618206(71) 0.67289 (10) r / a (i, 0, 0) (i, i, 0) (i, i, i) (2i, i, 0) fit (i, 0, 0) FIG. 25.…”
Section: Table IXunclassified
“…This may then be called the Y area law, suggesting the formation of a Y -shaped color flux tube among the three quarks at long distances. The confining feature of the Y area law can be explained partly if the QCD vacuum possesses the property of dual superconductor [9,10], which are explicitly demonstrated by lattice QCD simulations in the maximally Abelian gauge [11][12][13]. Bissey et al [14] investigated the profile of the non-Abelian action density in the three-quark system and found no ∆-shaped fluxtube structure at long distance, but the structure was not always of Y shape.…”
We investigate the static interquark potential for the three-quark system in SU(3) lattice gauge theory at zero temperature by using Monte Carlo simulations. We extract the potential from the correlation function of the three Polyakov loops, which are computed by employing the multilevel algorithm. We obtain remarkably clean results of the three-quark potential for O(200) sets of the three-quark geometries including not only the cases that three quarks are put at the vertices of acute, right, and obtuse triangles, but also the extreme cases such that three quarks are put in line. We find several new interesting features of the three-quark potential and then discuss its possible functional form.
“…i (i, i, 0) (i, i, i) (2i, i, 0) 1 0.618206(71) 0.67289 (10) r / a (i, 0, 0) (i, i, 0) (i, i, i) (2i, i, 0) fit (i, 0, 0) FIG. 25.…”
Section: Table IXunclassified
“…This may then be called the Y area law, suggesting the formation of a Y -shaped color flux tube among the three quarks at long distances. The confining feature of the Y area law can be explained partly if the QCD vacuum possesses the property of dual superconductor [9,10], which are explicitly demonstrated by lattice QCD simulations in the maximally Abelian gauge [11][12][13]. Bissey et al [14] investigated the profile of the non-Abelian action density in the three-quark system and found no ∆-shaped fluxtube structure at long distance, but the structure was not always of Y shape.…”
We investigate the static interquark potential for the three-quark system in SU(3) lattice gauge theory at zero temperature by using Monte Carlo simulations. We extract the potential from the correlation function of the three Polyakov loops, which are computed by employing the multilevel algorithm. We obtain remarkably clean results of the three-quark potential for O(200) sets of the three-quark geometries including not only the cases that three quarks are put at the vertices of acute, right, and obtuse triangles, but also the extreme cases such that three quarks are put in line. We find several new interesting features of the three-quark potential and then discuss its possible functional form.
“…A vortex molecule is a molecule that has two such terminations confined by an i -soliton. An i -soliton generates fractional quanta and confinement (such as quark confinement), which are critically important topics in the field of multicomponent quantum condensates, which includes the vacuum of quantum chromodynamics [22][23][24][25][26][27][28][29][30][31].…”
The Abrikosov lattice in the multilayer cuprate superconductor
CuBa2Ca3Cu3Oy
(Cu-1223) has been experimentally and theoretically demonstrated to be composed of
vortex molecules. Cu-1223 is considered to be a typical multicomponent superconductor.
We show that in such a system the rotational freedom around the axis of the vortex
molecular tube generates orientational disorder and the orientational glass (or
crystal) phase, which is never present in conventional vortex lattices consisting
of axisymmetric vortices. The emergence of the orientational glass phase and
orientational order phase with orthorhombic distortion is a general property of
vortex molecule lattices of the multiband type of multicomponent superconductors.
A new method to study the retardation effects in mesons is presented. Inspired from the covariant oscillator quark model, it is applied to the rotating string model in which a non zero value is allowed for the relative time between the quark and the antiquark. This approach leads to a retardation term which behaves as a perturbation of the meson mass operator. It is shown that this term preserves the Regge trajectories for light mesons, and that a satisfactory agreement with the experimental data can be obtained if the quark self-energy contribution is added. The consequences of the retardation on the Coulomb interaction and the wave function are also analyzed.
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