Lattice QCD on Small Computers
نویسندگان
چکیده
We demonstrate that lattice QCD calculations can be made 103– 10 times faster by using very coarse lattices. To obtain accurate results, we replace the standard lattice actions by perturbativelyimproved actions with tadpole-improved correction terms that remove the leading errors due to the lattice. To illustrate the power of this approach, we calculate the static-quark potential, and the charmonium spectrum and wavefunctions using a desktop computer. We obtain accurate results that are independent of the lattice spacing and agree well with experiment.
منابع مشابه
Tuning the Tadpole Improved Clover Wilson Action on Coarse Anisotropic Lattices
It has become clear that anisotropic, coarse lattices and improved lattice actions are the ideal candidates for lattice QCD calculations on small computers [1–4]. They are particularly advantageous for heavy objects like the glueballs, one meson states with nonzero three momenta and multi-meson states with or without three momenta. The gauge action employed is the tadpole improved gluonic actio...
متن کاملData Envelopment Analysis from simulation on the Lattice QCD using CCR model
One of the most serious principles in production theory in economic is the principle of "efficiency". Simply put, efficiency can be defined as the demand that the desired goals (outputs) are achieved with the minimum use of the available resources (inputs). In order to, distinguish the relative efficiency of organizational units with multiple inputs to produce multiple outputs, "Data Envelopmen...
متن کاملSolution of the Dirac equation in lattice QCD using a domain decomposition method
Efficient algorithms for the solution of partial differential equations on parallel computers are often based on domain decomposition methods. Schwarz preconditioners combined with standard Krylov space solvers are widely used in this context, and such a combination is shown here to perform very well in the case of the Wilson–Dirac equation in lattice QCD. In particular, with respect to even-od...
متن کاملHadronic Properties from Lattice QCD with Dynamical Quarks ∗
The lattice regularization of QCD provides us with the most systematic way of computing non-perturbative properties of hadrons directly from the first principles of QCD. The recent rapid development of parallel computers has enabled us to start realistic and systematic simulations with dynamical quarks. In this paper, I report on the first results from recent systematic studies on the lattice w...
متن کاملNational Computational Infrastructure for Lattice Gauge Theory: Accomplishments and Opportunities Lattice QCD Executive Committee
The objective of the SciDAC Project National Computational Infrastructure for Lattice Gauge Theory is to construct the computational infrastructure needed to study quantum chromodynamics (QCD), the fundamental theory of the strong forces of subatomic physics. Nearly all high energy and nuclear physicists in the United States working on the numerical study of QCD are involved in this project, an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1995