Accelerated overlap fermions

• Main Authors: Kamleh, Waseem, Leinweber, Derek, Williams, Anthony, Adams, David H.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2013
• Subjects: Physical and Mathematical Sciences
• Online Access: https://hdl.handle.net/10356/101111; http://hdl.handle.net/10220/18275
• Institution: Nanyang Technological University

Numerical evaluation of the overlap Dirac operator is difficult since it contains the sign function ε(H w ) of the Hermitian Wilson-Dirac operator H w with a negative mass term. The problems are due to H w having very small eigenvalues on the equilibrium background configurations generated in c...