34 citations · 227 across the 31 of their papers we have counts for
6 papers · 1 filter
A Parallel Computing Method for the Higher Order Tensor Renormalization Group
Takumi Yamashita, Tetsuya Sakurai
In this paper, we propose a parallel computing method for the Higher Order Tensor Renormalization Group (HOTRG) applied to a -dimensional simple lattice model. Se…
A filtering technique for the temporally reduced matrix of the Wilson fermion determinant
Yasunori Futamura, Shoji Hashimoto, Akira Imakura +2
The Wilson fermion determinant can be written in the form of a series expansion in fugacity , provided that the eigenmodes of the temporally reduced operator are obtai…
Modified Block BiCGSTAB for Lattice QCD
Y. Nakamura, K. -I. Ishikawa, Y. Kuramashi +2
We present results for application of block BiCGSTAB algorithm modified by the QR decomposition and the SAP preconditioner to the Wilson-Dirac equation with multiple right-hand sid…
A quadrature-based eigensolver with a Krylov subspace method for shifted linear systems for Hermitian eigenproblems in lattice QCD
H. Ohno, Y. Kuramashi, T. Sakurai +1
We consider a quadrature-based eigensolver to find eigenpairs of Hermitian matrices arising in lattice quantum chromodynamics. To reduce the computational cost for finding eigenpai…
Application of preconditioned block BiCGGR to the Wilson-Dirac equation with multiple right-hand sides in lattice QCD
H. Tadano, Y. Kuramashi, T. Sakurai
There exist two major problems in application of the conventional block BiCGSTAB method to the O(a)-improved Wilson-Dirac equation with multiple right-hand-sides: One is the deviat…
Application of block Krylov subspace algorithms to the Wilson-Dirac equation with multiple right-hand sides in lattice QCD
T. Sakurai, H. Tadano, Y. Kuramashi
It is well known that the block Krylov subspace solvers work efficiently for some cases of the solution of differential equations with multiple right-hand sides. In lattice QCD cal…