One flavor mass reweighting in lattice QCD

Understand

One flavor mass reweighting can be used in lattice QCD computations to fine tune the quark masses to their physical values.

• We present a new method that utilizes an unbiased stochastic estimation of the one flavor determinant.
• The stochastic estimation is based on the integral representation of the determinant of a complex matrix, which we prove.
• In contrast to other methods it can also be applied in situations where the determinant has a complex phase.