Efficient computation of low-lying eigenmodes of non-Hermitian Wilson-Dirac type matrices

Abstract

A polynomial transformation for non-Hermitian matrices is presented, which provides access to wedge-shaped spectral windows. For Wilson-Dirac type matrices this procedure not only allows the determination of the physically interesting low-lying eigenmodes but also provides a substantial acceleration of the eigenmode algorithm employed.

Comments: Lattice2001(algorithms)