Light Quark Mass Reweighting

Understand

We present a systematic study of the effectiveness of light quark mass reweighting.

• This method allows a single lattice QCD ensemble, generated with a specific value of the dynamical light quark mass, to be used to determine results for other, nearby light dynamical quark masses.
• We study two gauge field ensembles generated with 2+1 flavors of dynamical domain wall fermions with light quark masses m_l=0.02 (m_\pi=620 MeV) and m_l=0.01 (m_\pi=420 MeV).
• We reweight each ensemble to determine results which could be computed directly from the other and check the consistency of the reweighted results with the direct results.