Browsing Pure & Applied Mathematics by Sponsor "Higher Education Authority"
Now showing items 1-14 of 14
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Charmonium at high temperature in two-flavor QCD
(American Physical Society, 2007)We compute charmonium spectral functions in 2-flavor QCD on anisotropic lattices using the maximum entropy method. Our results suggest that the S-waves (J= and c) survive up to temperatures close to 2Tc, while the P-waves ... -
Charmonium properties in the quark-gluon plasma
(2007)We present results for charmonium correlators and spectral functions in 2-flavour QCD on anisotropic lattices. Our results indicate that the S-waves (J/y and hc) survive up to temperatures close to 2Tc, while the P-waves ... -
Charmonium spectral functions in Nf=2 QCD
(Proceedings of Science, 2005)We report on a study of charmonium at high temperature in 2-flavour QCD. This is the first such study with dynamical fermions. Using an improved anisotropic lattice action, spectral functions are extracted from correlators ... -
Charmonium spectroscopy on dynamical anisotropic lattices
(Elsevier, 2006)We present a first study of the charmonium spectrum on Nf = 2 dynamical, anisotropic lattices. We take advantage of all-to-all quark propagators to build spatially extended interpolating operators to increase the overlap ... -
The effect of pion mass on Skyrme configurations
(2007)In the Skyrme model, atomic nuclei are identified with solitonic configurations. If the pion mass is set to zero, these configurations are spherical shells of energy with a fullerene-like appearance and are well approximated ... -
Improving Algorithms to Compute All Elements of the Lattice Quark Propagator
(Elsevier, 2005)We present a new exact algorithm for estimating all elements of the quark propagator. The advantage of the method is that the exact all-to-all propagator is reproduced in a large but finite number of inversions. The ... -
Mesons at high temperature in Nf = 2 QCD
(American Physical Society, 2006)We report first results for spectral functions of charmonium in 2-flavour QCD. The spectral functions are determined from vector and pseudoscalar correlators on a dynamical, anisotropic lattice. J/ and c are found ... -
Nonperturbative study of the action parameters for anisotropic-lattice quarks
(2006)A quark action designed for highly anisotropic-lattice simulations is discussed. The mass-dependence of the parameters in the action is studied and the results are presented. Applications of this action in studies of ... -
Practical all-to-all propagators for lattice QCD
(Elsevier, 2005)A new method for computing all elements of the lattice quark propagator is proposed. The method combines the spectral decomposition of the propagator, computing the lowest eigenmodes exactly, with noisy estimators which ... -
The spectrum of charmed mesons from dynamical anisotropic lattices
(2007)We present our preliminary analysis for the chamonium and Ds spectra obtained from Nf = 2 dynamical anisotropic lattices. We use 123?80 lattices with lattice spacing at = 7.35 GeV?1 and anisotropy of six. Meson correlators ... -
Static-light hadrons on a dynamical anisotropic lattice
(Proceedings of Science, 2005)We present preliminary results for the static-light meson and baryon spectra for Nf = 2 QCD. The study is performed on an anisotropic lattice and uses a new all-to-all propagator method allowing us to determine particle ... -
Static-light matrix elements on a dynamical antisotropic lattice
(Elsevier, 2005)The static-light matrix element needed to determine fB is studied on an anisotropic lattice with Nf = 2. The improvement in precision due to stout links and all-to-all propagators is investigated. -
Tuning anisotropies for dynamical gauge configurations
(SISSA, 2005)We present methods and results for the tuning of quark and gluon anisotropies for improved actions in Nf = 2 QCD. -
A zero-mode quantization of the Skyrmion
(Elsevier, 2006)In the semi-classical approach to the Skyrme model, nuclei are approximated by quantum mechanical states on a finite-dimensional space of field configurations; in zero-mode quantization this space is generated by rotations ...
