7 research outputs found
Short distance potential and the thick center vortex model
The short distance potentials between heavy SU(3) and SU(4) sources are
calculated by increasing the role of vortex fluxes piercing Wilson loops with
contributions close to the trivial center element and by fluctuating the vortex
core size in the model of thick center vortices. By this method, a Coulombic
potential consistent with Casimir scaling is obtained. In addition, all other
features of the potential including a linear intermediate potential in
agreement with Casimir scaling and a large distance potential proportional to
the -ality of the representation are restored. Therefore, the model of thick
center vortices may be used as a phenomenological model, which is able to
describe the potential for all regimes.Comment: 9 pages and 6 figure
Confinement and the second vortex of the SU(4) gauge group
We study the potential between static SU(4) sources using the Model of Thick
Center Vortices. Such vortices are characterized by the center elements
and . Fitting the ratios of string tensions to those
obtained in Monte-Carlo calculations of lattice QCD we get , where
is the probability that a vortex of type is piercing a plaquette.
Because of vortices of type two are overlapping vortices of type
one. Therefore, corresponds to the existence of an attractive force
between vortices of type one
Quantitative Performance Analysis of Hybrid Mesh Segmentation
This paper presents a comprehensive quantitative performance analysis of hybrid mesh segmentation algorithm. An important contribution of this proposed hybrid mesh segmentation algorithm is that it clusters facets using “facet area” as a novel mesh attribute. The method does not require to set any critical parameters for segmentation. The performance of the proposed algorithm is evaluated by comparing the proposed algorithm with the recently developed state-of-the-art algorithms in terms of coverage, time complexity, and accuracy. The experimentation results on various benchmark test cases demonstrate that Hybrid Mesh Segmentation approach does not depend on complex attributes, and outperforms the existing state-of-the-art algorithms. The simulation reveals that Hybrid Mesh Segmentation achieves a promising performance with coverage of more than 95%