Definition
Quantum Chromodynamics (QCD) is the prime and generally accepted theory of the strong interactions between quarks and gluons. In QCD, there appear intrinsically nonperturbative effects such as the confinement of quarks, chiral symmetry breaking, and topology. These effects can be analyzed by formulating the theory on a four-dimensional space-time lattice and solving it by large-scale numerical simulations. An overview of the present simulation landscape, a physical example and a description of simulation and parallelization aspects of QCD on the lattice is given.
Discussion
Introduction
When experiments at large accelerators such as HERA at DESY and LEP and LHC at CERN are performed, in the detectors one observes hadrons such as pions, protons, or neutrons. On the other hand, from the particular signature of these particles as seen in the detectors, it is known that the hadrons are not fundamental particles but that they must have an inner structure.
It is strongly believed...
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Bibliography
Wilson KG (1974) Confinement of quarks. Phys Rev D10:2445–2459
Creutz M (1980) Monte Carlo study of quantized SU(2) Gauge theory. Phys Rev D21:2308–2315
Jansen K (2008) POSCI LATTICE2008, 010, Lattice QCD: a critical status report. [arXiv:0810.5634 [hep-lat]].
Lüscher M (2005) Schwarz-preconditioned HMC algorithm for two-flavour lattice QCD. Comput Phys Commun 165:199
Urbach C, Jansen K, Shindler A, Wenger U (2006) HMC algorithm with multiple time scale integration and mass preconditioning. Comput Phys Commun 174:87–98
Clark MA, Kennedy AD (2007) Accelerating dynamical fermion computations using the rational hybrid Monte Carlo (RHMC) algorithm with multiple pseudofermion fields. Phys Rev Lett 98:051601
Luscher M (2007) Deflation acceleration of lattice QCD simulations. JHEP 12:011
Dürr S et al (2008) Ab initio determination of light hadron masses. Science 322:1224–1227
Saad Y (2003) Iterative methods for sparse linear systems, 2nd edn. SIAM, Philadelphia, PA
Belletti F et al (2006) Computing for LQCD: apeNEXT. Comput Sci Eng 8:18–29
Boyle PA et al (2005) QCDOC: project status and first results. J Phys Conf Ser 16:129–139
Baier H et al QPACE – a QCD parallel computer based on Cell processors, arXiv:0911.2174
Jansen K, Urbach C (2009) tmLQCD: a program suite to simulate Wilson Twisted mass Lattice QCD. Comput Phys Commun 180:2717–2738
Jung C (2009) POSCI LAT2009, 002, Status of dynamical ensemble generation. [arXiv:1001.0941 [hep-lat]].
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer Science+Business Media, LLC
About this entry
Cite this entry
Jansen, K. (2011). QCD (Quantum Chromodynamics) Computations. In: Padua, D. (eds) Encyclopedia of Parallel Computing. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-09766-4_115
Download citation
DOI: https://doi.org/10.1007/978-0-387-09766-4_115
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-09765-7
Online ISBN: 978-0-387-09766-4
eBook Packages: Computer ScienceReference Module Computer Science and Engineering