Parameters of the lowest order chiral Lagrangian from fermion eigenvalues

Abstract

Recent advances in Random Matrix Theory enable one to determine the pseudoscalar decay constant from the response of eigenmodes of quenched fermions to an imaginary isospin chemical potential. We perform a pilot test of this idea, from simulations with two flavors of dynamical overlap fermions.

11 pages, 7 figures, Revtex

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• FLAG Review 2019
• Review of lattice results concerning low energy particle physics
• Reweighting towards the chiral limit
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• Low energy chiral constants from epsilon-regime simulations with improved Wilson fermions
• Determination of the chiral condensate from QCD Dirac spectrum on the lattice
• Lattice study of meson correlators in the epsilon-regime of two-flavor QCD
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• Finite Volume Scaling of Pseudo Nambu-Goldstone Bosons in QCD
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• Exploring the epsilon regime with lattice Wilson fermions