Recent results from systematic parameterizations of Ginsparg-Wilson fermions

✍ Scribed by Christof Gattringer

• Book ID: 104354290
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 820 KB
• Volume: 119
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)01500-7

✦ Synopsis

The "Fixed Point Dirac Operator" and "Chirally Improved Fermions" both use large numbers of gauge paths and the full Dirac structure to approximate a solution of the Ginsparg-Wilson equation.

After a brief review of the two approaches we present recent results for quenched QCD with pion masses down to 210 MeV. We discuss the limits and advantages of approximate parameterizations and outline future perspectives.