Bhabani Sankar Tripathy

Sign of Wilson-Fermion Determinant using Contour-Integral Spectral Projection

Key properties of a large sparse operator can often be determined by only a small, spectrally localized subset of its eigenmodes. In lattice QCD with Wilson fermions, the sign of the fermion determinant is determined by the parity of the number of eigenvalues lying on the negative real axis of the non-Hermitian Wilson-...