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-Oct-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
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