arXiv subjects

Qi Liu

Publications and source records attributed to Qi Liu.

704 records · Page 40Linked to original sources

arXiv2010

A model for semantic integration of business components

Today, reusable components are available in several repositories. These last are certainly conceived for the reusing However, this re-use is not immediate; it requires, in the fact, to pass through some essential conceptual operations, among them in particular, research, integration, adaptation, and composition. We are interested in the present work to the problem of semantic integration of heterogeneous Business Components. This problem is often put in syntactical terms, while the real stake is of semantic order. Our contribution concerns a model proposal for Business components integration as well as resolution method of semantic naming conflicts, met during the integration of Business Components.

cs.SE↗

arXiv2009

Two pion scattering, I=0 and disconnected diagrams in Lattice QCD

A full, high-statistic I=0 and I=2 $π-π$ scattering calculation including the disconnected diagram is performed on 2+1 flavor, domain wall fermion gauge configurations generated using the Iwasaki gauge action with $β=2.13$, a $16^3\times32$ volume with $L_s=16$ and $a^{-1}=1.73GeV$. Using the same light quark propagators and additional strange quark propagators, we study the $η$ and $η^\prime$ mesons, where disconnected diagrams also make an important contribution. Our $π-π$ calculation shows a good exponentially decaying signal from the disconnected graph, which makes a small contribution to the I=0 scattering amplitude at least for the short times where it can be accurately computed. We are able to resolve the $η$ and $η^\prime$ states and see the pattern of SU(3) flavor symmetry breaking found in Nature.

hep-lat↗