Lattice QCD with Overlap Dirac Quarks

• Main Authors: Tung-Han Hsieh, 謝東翰
• Other Authors: Ting-Wai Chiu
• Format: Others
• Language: en_US
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/13667640642807943528

博士 === 國立臺灣大學 === 物理學研究所 === 90 === In this thesis, we implement the overlap Dirac quarks on a PC cluster. In order to obtain a highly accurate approximation to the overlap Dirac operator, we use the Zolotarev optimal rational polynomial and project out low-lying eigenvalues of (Hw)^2. To enhance the performance, we also adopt the multiple mass conjugate gradient algorithm, and write the computational intensive part in the SSE2 codes of Pentium 4. With the proper memory management technique, we can solve up to 16 columns of quark propagator on lattice of size 16^3 * 32 in a single node with 1GB physical memory.