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Calculations of Glueball Wavefunction in Lattice QCD
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作者 xiang-qian luo Dart-yin Soh Jun Liu 《中山大学研究生学刊(自然科学与医学版)》 2007年第1期69-76,共8页
We calculate the glueball 〈gg〉 wavefunction and mass in SU(3) Lattice gauge with improved gauge actions on the anisotropic lattice. All simulations are performed on the cluster of our lab. We have measured the scala... We calculate the glueball 〈gg〉 wavefunction and mass in SU(3) Lattice gauge with improved gauge actions on the anisotropic lattice. All simulations are performed on the cluster of our lab. We have measured the scalar and tensor glueball wavefunction. At the same time, we have briefly calculated the glueball mass as for a consistent check. 展开更多
关键词 晶格QCD 波函数 蒙特卡洛法 各向异性
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General Convex Integral Control
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作者 Bai-Shun Liu xiang-qian luo Jian-Hui Li 《International Journal of Automation and computing》 EI CSCD 2014年第5期565-570,共6页
In this paper, a fire-new general integral control, named general convex integral control, is proposed. It is derived by defining a nonlinear function set to form the integral control action and educe a new convex fun... In this paper, a fire-new general integral control, named general convex integral control, is proposed. It is derived by defining a nonlinear function set to form the integral control action and educe a new convex function gain integrator, introducing the partial derivative of Lyapunov function into the integrator and resorting to a general strategy to transform ordinary control into general integral control. By using Lyapunov method along with the LaSalle s invariance principle, the theorem to ensure regionally as well as semi-globally asymptotic stability is established only by some bounded information. Moreover, the lemma to ensure the integrator output to be bounded in the time domain is proposed. The highlight point of this integral control strategy is that the integral control action seems to be infinity, but it factually is finite in the time domain. Therefore, a simple and ingenious method to design the general integral control is founded. Simulation results showed that under the normal and perturbed cases, the optimum response in the whole control domain of interest can all be achieved by a set of control gains, even under the case that the payload is changed abruptly. 展开更多
关键词 General integral control nonlinear integrator convex integrator nonlinear control output regulation
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