標題: | New one-flavor hybrid Monte Carlo simulation method for lattice fermions with gamma(5) hermiticity |
作者: | Ogawa, Kenji 物理研究所 Institute of Physics |
關鍵字: | Hybrid Monte Carlo;Odd flavor simulation;gamma(5) hermiticity;Schur decomposition;Wilson fermions;Domain-wall fermions |
公開日期: | 25-十月-2011 |
摘要: | We propose a new method for Hybrid Monte Carlo (HMC) simulations with odd numbers of dynamical fermions on the lattice. It employs a different approach from polynomial or rational HMC. In this method, gamma(5) hermiticity of the lattice Dirac operators is crucial and it can be applied to Wilson, domain-wall, and overlap fermions. We compare HMC simulations with two degenerate flavors and (1 + 1) degenerate flavors using optimal domain-wall fermions. The ratio of the efficiency, (number of accepted trajectories)/(simulation time), is about 3 : 2. The relation between pseudofermion action of chirally symmetric lattice fermions in four-dimensional (overlap) and five-dimensional (domain-wall) representation are also analyzed. (C) 2011 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.physletb.2011.09.023 http://hdl.handle.net/11536/14949 |
ISSN: | 0370-2693 |
DOI: | 10.1016/j.physletb.2011.09.023 |
期刊: | PHYSICS LETTERS B |
Volume: | 704 |
Issue: | 5 |
起始頁: | 574 |
結束頁: | 581 |
顯示於類別: | 期刊論文 |