Work

Improving dynamical lattice QCD simulations through integrator tuning using Poisson brackets and a force-gradient integrator

Year: 2011

Type: article

Abstract: We show how the integrators used for the molecular dynamics step of the Hybrid Monte Carlo algorithm can be further improved. These integrators not only approximately conserve some Hamiltonian $H$ but conserve exactly a nearby shadow Hamiltonian $\stackrel{\texttildelow{}}{H}$. This property allows for a new tuning method of the molecular dynamics integrator and also allows for a new class of integrators (force-gradient integrators) which is expected to reduce significantly the computational cost of future large-scale gauge field ensemble generation.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.84.071502

Authors: M. A. Clark, Bálint Joó, A. D. Kennedy, P. J. Silva

Institutions: Center for Astrophysics Harvard & Smithsonian, Thomas Jefferson National Accelerator Facility, University of Edinburgh, Centro de Física Computacional, University of Coimbra

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy

OpenAlex ID: W2076926980

FWCI: 1.029

Cites: 6

Cited by: 21

Related to: 10