Pseudoscalar glueball mass: QCD versus lattice gauge theory prediction

Pseudoscalar Glueball Mass: QCD vs. Lattice Gauge Theory Prediction

We study whether the pseudoscalar glueball mass in full QCD can differ from the prediction of quenched lattice calculations. Using properties of the correlator of the vacuum topological susceptibility we derive an expression for the upper bound on the QCD glueball mass. We show that the QCD pseudoscalar glueball is lighter than the pure Yang-Mills theory glueball studied in quenched lattice cal...

Glueball Mass Predictions of the Valence Approximation to Lattice QCD

We evaluate the infinite volume, continuum limit of glueball masses in the valence (quenched) approximation to lattice QCD. For the lightest scalar and tensor states we obtain masses of 1648 ± 58 MeV and 2267 ± 104 MeV, respectively. Typeset using REVTEX

QCD Thermodynamics from Lattice Gauge Theory

Declaration I state that the work embodied in this thesis forms my own contribution to the research work carried out under the guidance of Prof. Rajiv V. Gavai. This work has not been submitted for any other degree to this or any other University or body. Whenever references have been made to previous works of others, it has been clearly indicated. (signature of the supervisor) (signature of th...

Progress in Qcd Using Lattice Gauge Theory

Landau Gauge QCD : Functional Methods versus Lattice Simulations †

The infrared behaviour of QCD Green’s functions in Landau gauge has been focus of intense study. Different non-perturbative approaches lead to a prediction in line with the conditions for confinement in local quantum field theory as spelled out in the Kugo-Ojima criterion. Detailed comparisons with lattice studies have revealed small but significant differences, however. But aren’t we comparing...