Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 92 for “"Lattice QCD"”.
-
Thermodynamics of lattice QCD
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T16:59:26Z No. of bitstreams: 1 1985_matsuoka.pdf: 1424055 bytes, checksum: a5e67bf9659882f27f89c02a0b2e29b9 (MD5)
-
Strong coupling methods for lattice QCD
Lattice QCD at finite baryon density suffers from the numerical finite density sign problem. Strong coupling methods, expanding in the inverse gauge coupling, give rise to alternative representations of the partition function that can make the sign problem milder. This Habilitation discusses the …
-
Light Hadron Properties From Lattice QCD
… of mesons and baryons with the tools of lattice calculations and effective field theories.</p><p>The two and three flavor effective field theories are applied to pions and kaons respectively to study the quark mass dependence of their masses and decay constants. In addition, the …
-
Exploring proton structure using lattice QCD
… parton distributions of the nucleon using lattice QCD. The generalized parton distributions determine the angular momentum decomposition of the nucleon and the transverse distributions of partons within the nucleon. Additionally, the generalized parton distributions reduce to the elastic …
-
Electromagnetic properties of baryons from lattice QCD
… and decuplet baryons are calculated in quenched QCD on a 20 ³ x40 lattice with a lattice spacing of 0.128 fm using the fat - link irrelevant clover ( FLIC ) fermion action. FLIC fermions enable simulations to be performed efficiently at quark masses as low as 300 MeV. By combining FLIC fermions …
-
Exploration of new methods for Lattice QCD
… methods aimed at alleviating two difficulties in Lattice QCD: statistical noise and data storage. The first method intends to improve the signal-to-noise (S/N) ratio in three-point correlators, by extending previous work by Detmold and Endres. We test the method in the measurement of two …
-
Use of correlation matrices in lattice QCD
… in analyzing Monte Carlo calculations from lattice quantum chromodynamics. Correlation matrices are a powerful tool for examining many problems in which significant correlations exist, and thus offer potential advantages for lattice QCD. Several models were used to study the relative …
-
Study of instanton physics in lattice QCD
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
-
Charmonium and Charmed Mesons With Improved Lattice QCD
… properties of charmonium and charmed mesons with lattice QCD. The calculations use improved actions and 2+1 flavors of dynamical quarks. After a review of the relevant phenomenology, I provide an introduction to lattice techniques including the specific actions used in this analysis. Details of …
-
The scattering of spinning hadrons from lattice QCD
… so, I will first give a brief introduction to QCD and review the framework necessary to perform lattice QCD calculations in Chapters 1 and 2. In Chapter 3, I present the first lattice calculation of $\rho \pi$ scattering in isospin-2. Here, $\rho\pi$ features in dynamically-coupled $^3{S}_1$ …
-
Spectroscopy of exotic charm mesons from lattice QCD
… To study exotic mesons from first principles, lattice QCD provides the framework to perform spectroscopy calculations numerically. I will give a review and describe the relevant techniques used in this thesis. After doing so, I will calculate masses of charmonium with angular momentum up to …
-
Gravitational form factors of hadrons from lattice QCD
… matrix elements of the energy-momentum tensor of QCD. These quantities describe how energy, spin, and various mechanical properties of hadrons are carried by their quark and gluon constituents, and can be constrained using the framework of lattice quantum chromodynamics (QCD). In this thesis, we …
-
A Study of the Λ(1405) in Lattice QCD
… quark model interpretation for this state, and lattice QCD studies have consistently failed to reproduce it. In this work, we use the PACS-CS (2+1)-flavour full-QCD ensembles together with a variational analysis using source and sink smearing in an attempt to isolate this otherwiseelusive state …
-
A variational approach to hadron structure in lattice QCD
… the strong interaction, Quantum Chromodynamics (QCD). However, the non-perturbative nature of this theory in the relevant energy scales renders the standard perturbative methods ineffective. The formulation of QCD on a discrete space-time lattice allows for a first principles, non-perturbative …
-
Isospin Violating Hadronic Mass Splittings using Lattice QCD+QED
… of the theories of quantum chromodynamics (QCD) and quantum electrodynamics (QED), which reveal an even deeper layer of structure than the atom and the nucleon. We use the non-perturbative method of lattice QCD+QED to make precision estimates of the masses and mass splittings of the light …
-
Lattice QCD determination of weak decays of B mesons
… work. Details of the basic methodology of lattice quantum field theory are given as well as the specific formulation of the relativistic theory and nonrelativistic approximations used in this work to describe quantum chromodynamics. A comprehensive calculation of the zero recoil B to D* …
-
The application of automated perturbation theory to lattice QCD
… elements must be calculated nonperturbatively. Lattice quantum chromodynamics (QCD) provides the framework for nonperturbative calculations of QCD processes. Current lattices are too coarse to directly simulate b quarks. Therefore an effective theory, nonrelativistic QCD (NRQCD), is used to …
-
Distinguishing exotic states from scattering states in lattice QCD
… potentially interesting new exotic states in QCD from conventional scattering states using lattice QCD, and addresses the specific case of the search for localized resonances in a system of five quarks. We employ a complete basis of local interpolating operators, as well as a number of …
Page 1 of 5