Recent Developments in Quark Nuclear Physics
Anthony W. Thomas, Derek B. Leinweber, Ross D. Young (CSSM, U., Adelaide)
TL;DR
This paper reviews recent advances in quark nuclear physics, focusing on lattice QCD extrapolations, chiral behavior, and the effectiveness of chiral effective field theory with finite-range regulators.
Contribution
It demonstrates that chiral effective field theory with finite-range regulators offers a reliable, model-independent method for extrapolating lattice QCD results to physical quark masses.
Findings
Chiral nonanalytic behavior is crucial in hadronic observables.
Finite-range regulator methods improve extrapolation reliability.
Model independence of lattice QCD extrapolations is supported.
Abstract
We provide an overview of recent work exploring the quark-mass dependence of hadronic observables and the associated role of chiral nonanalytic behavior due to the meson-cloud of hadrons. In particular, we address an issue of great current interest, namely the degree of model independence of results obtained through a controlled extrapolation of lattice QCD simulation results. Physical insights gained from this research are highlighted. We emphasize how chiral effective field theory formulated with a finite-range regulator provides a reliable and model-independent extrapolation to the physical world.
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