Improving the dynamical overlap algorithm
N. Cundy, S. Krieg, Th. Lippert
TL;DR
This paper introduces algorithmic enhancements to the overlap Hybrid Monte Carlo method, focusing on preconditioning and correction step improvements to increase accuracy and efficiency in lattice QCD simulations.
Contribution
The paper presents novel algorithmic improvements, including preconditioning and correction step enhancements, making the overlap HMC algorithm more accurate and computationally efficient.
Findings
Correction step now O(Δt^2) exact
Improved efficiency in eigenvalue sign change handling
Enhanced accuracy of the overlap HMC algorithm
Abstract
We present algorithmic improvements to the overlap Hybrid Monte Carlo algorithm, including preconditioning techniques and improvements to the correction step, used when one of the eigenvalues of the Kernel operator changes sign, which is now O(\Delta t^2) exact.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Nuclear reactor physics and engineering · Particle physics theoretical and experimental studies