Work

Chronological inversion method for the Dirac matrix in hybrid Monte Carlo

Year: 1997

Type: article

Abstract: In hybrid Monte Carlo simulations for full QCD, the gauge fields evolve smoothly as a function of molecular dynamics time. Here we investigate improved methods of estimating the trial or starting solutions for the Dirac matrix inversion as superpositions of a chronological sequence of solutions in the recent past. By taking as the trial solution the vector which minimizes the residual in the linear space spanned by the past solutions, the number of conjugate gradient iterations per unit MD time is decreased by at least a factor of 2. Extensions of this basic approach to precondition the conjugate gradient iterations are also discussed.

Source: Nuclear Physics B

DOI: 10.1016/s0550-3213(96)00579-2

Authors: R.C. Brower, T. Ivanenko, A.R. Levi, K.N. Orginos

Institutions: Boston University, Massachusetts Institute of Technology, Brown University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

OpenAlex ID: W2003143357

FWCI: 2.842

Cites: 19

Cited by: 70

Related to: 10