UKQCD software for lattice quantum chromodynamics

2009 ◽  
Vol 367 (1897) ◽  
pp. 2585-2594
Author(s):  
P.A. Boyle ◽  
R.D. Kenway ◽  
C.M. Maynard
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Chromodynamics ◽  
Lattice Qcd ◽  
Nuclear Interaction ◽  
Quantum Field ◽  
Lattice Quantum Chromodynamics ◽  
The Us ◽  
Lattice Quantum ◽  
Familiar Objects

Quantum chromodynamics (QCD) is the quantum field theory of the strong nuclear interaction and it explains how quarks and gluons are bound together to make more familiar objects such as the proton and neutron, which form the nuclei of atoms. UKQCD is a collaboration of eight UK universities that have come together to obtain and pool sufficient resources, both computational and manpower, to perform lattice QCD calculations. This paper explains how UKQCD uses and develops this software, how performance critical kernels for diverse architectures such as quantum chromodynamics-on-a-chip, BlueGene and XT4 are developed and employed and how UKQCD collaborates both internally and externally, with, for instance, the US SciDAC lattice QCD community.

scholarly journals QCD on the Lattice

2020 ◽  
pp. 137-262
Author(s):  
Hartmut Wittig
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Ab Initio ◽  
Quantum Chromodynamics ◽  
Lattice Qcd ◽  
Strong Interaction ◽  
Quantum Field ◽  
Low Energies ◽  
Lattice Approach ◽  
Established Technique

AbstractSince Wilson’s seminal papers of the mid-1970s, the lattice approach to Quantum Chromodynamics has become increasingly important for the study of the strong interaction at low energies, and has now turned into a mature and established technique. In spite of the fact that the lattice formulation of Quantum Field Theory has been applied to virtually all fundamental interactions, it is appropriate to discuss this topic in a chapter devoted to QCD, since by far the largest part of activity is focused on the strong interaction. Lattice QCD is, in fact, the only known method which allows ab initio investigations of hadronic properties, starting from the QCD Lagrangian formulated in terms of quarks and gluons.

The pion form factor from twisted-mass lattice quantum chromodynamics

2006 ◽  
Vol 84 (6-7) ◽  
pp. 661-668
Author(s):  
A M Abdel-Rehim ◽  
R Lewis
Keyword(s):  
Form Factor ◽  
Quantum Chromodynamics ◽  
Lattice Qcd ◽  
Pion Form Factor ◽  
Explicit Computation ◽  
Lattice Quantum Chromodynamics ◽  
Zero Modes ◽  
Twisted Mass ◽  
Lattice Quantum ◽  
Insight Into

The pion form factor offers insight into the transition from perturbative to nonperturbative quantum chromodynamics (QCD), and is of current experimental interest. Twisted-mass lattice QCD is a method for eliminating unphysical zero modes from Wilson lattice simulations; it also allows for removal of the leading lattice spacing artifacts through a momentum-averaging prescription. In our study of the pion form factor, we performed the first explicit computation with momentum averaging in twisted-mass lattice QCD, and the first use of the GMRES-DR algorithm for twisted fermion matrix inversion.PACS No.: 12.38.Gc

scholarly journals MONTE CARLO CALCULATION OF THE LATERAL CASIMIR FORCES BETWEEN RECTANGULAR GRATINGS WITHIN THE FORMALISM OF LATTICE QUANTUM FIELD THEORY

2011 ◽  
Vol 26 (16) ◽  
pp. 2743-2756 ◽  
Author(s):  
OLEG PAVLOVSKY ◽  
MAXIM ULYBYSHEV
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Lattice Quantum Field Theory ◽  
Quantum Electrodynamics ◽  
Monte Carlo Calculation ◽  
Quantum Field ◽  
Casimir Forces ◽  
Lattice Quantum

We propose a new Monte Carlo method for calculation of the Casimir forces. Our method is based on the formalism of noncompact lattice quantum electrodynamics. This approach has been tested in the simplest case of two ideal conducting planes. After this the method has been applied to the calculation of the lateral Casimir forces between two ideal conducting rectangular gratings. We compare our calculations with the results of PFA and "Optimal" PFA methods.

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