Search

Your search keyword '"Tian-Shin Guu"' showing total 3 results
Start Over Author "Tian-Shin Guu"
3 results on '"Tian-Shin Guu"'

1. Decay constants of pseudoscalar D-mesons in lattice QCD with domain-wall fermion

Author

Wen-Ping Chen, Yu-Chih Chen, Ting-Wai Chiu, Han-Yi Chou, Tian-Shin Guu, and Tung-Han Hsieh

Subjects
Physics, QC1-999
Abstract

We present the first study of the masses and decay constants of the pseudoscalar D mesons in two flavors lattice QCD with domain-wall fermion. The gauge ensembles are generated on the 243×48 lattice with the extent Ns=16 in the fifth dimension, and the plaquette gauge action at β=6.10, for three sea-quark masses with corresponding pion masses in the range 260–475 MeV. We compute the point-to-point quark propagators, and measure the time-correlation functions of the pseudoscalar and vector mesons. The inverse lattice spacing is determined by the Wilson flow, while the strange and the charm quark masses by the masses of the vector mesons ϕ(1020) and J/ψ(3097) respectively. Using heavy meson chiral perturbation theory (HMChPT) to extrapolate to the physical pion mass, we obtain fD=202.3(2.2)(2.6) MeV and fDs=258.7(1.1)(2.9) MeV.

Published
2014
Full Text
View/download PDF

2. Lattice QCD with optimal domain-wall fermions: light meson spectroscopy

Author

Ting-Wai Chiu, Yao-Yuan Mao, Tung-Han Hsieh, Chao-Hsi Huang, Tian-Shin Guu, and Yu-Chih Chen

Subjects
Physics, Quantum chromodynamics, Quark, Particle physics, Domain wall (string theory), Meson, High Energy Physics::Lattice, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Ideal (order theory), Lattice QCD, GPU cluster, Fermion
Abstract

Lattice QCD with exact chiral symmetry is an ideal theoretical framework to study the non-perturbative physics from the first principles of QCD. Howev er, it is rather nontrivial to performMonte Carlo simulation such that the chiral symmetry is perserved to a very high precision and alltopological sectors are sampled ergodically.Since 2009, the Taiwan Lattice QCD Collaboration (TWQCD) has been using a GPU cluster(currently constituting of 250 NVIDIA GPUs) which attains 40 Teraflops (sustained) to simulateunquenched lattice QCD with the optimal domain-wall quarks[1, 2]. We have realized our goal ofpreserving the chiral symmetry to a good precision (with m

Published
2011
Full Text
View/download PDF

3. A shift-register sequence random number generator implemented on the microcomputers with 8088/8086 and 8087

Author

Ting-Wai Chiu and Tian-Shin Guu

Subjects
Workstation, Assembly language, Computer science, Monte Carlo method, General Physics and Astronomy, Parallel computing, law.invention, Hybrid Monte Carlo, Convolution random number generator, Hardware and Architecture, law, Lattice (order), computer, Shift register, Statistical hypothesis testing, computer.programming_language
Abstract

A shift-register sequence random number generator is programmed in Intel 8088/8086 and 8087 assembly language. Its performance is good in terms of its speed, long period and consistently producing reliable in extensive statistical tests. This generator may promote the microcomputers with 8088/8086 and 8087 to become a workstation for developing programs for Monte Carlo simulations of lattice field theories.

Published
1987
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results