15 citations · 15 across the 1 of their papers we have counts for
2 papers
hep-lat2009
Krylov subspace methods and the sign function: multishifts and deflation in the non-Hermitian case
Jacques C. R. Bloch, Tobias Breu, Andreas Frommer +3
Rational approximations of the matrix sign function lead to multishift methods. For non-Hermitian matrices long recurrences can cause storage problems, which can be circumvented wi…
hep-lat2009★ 15 cited
Short-recurrence Krylov subspace methods for the overlap Dirac operator at nonzero chemical potential
Jacques C. R. Bloch, Tobias Breu, Andreas Frommer +3
The overlap operator in lattice QCD requires the computation of the sign function of a matrix, which is non-Hermitian in the presence of a quark chemical potential. In previous wor…