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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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15 papers · 2 filters
Hamiltonian SU(N) Lattice Gauge Theories With Exact Vacuum States In 2+1 Dimensions
G. Frichter, D. Robson
We investigate (2+1)-d Hamiltonian lattice gauge theory using a class of Hamiltonians having exactly known vacuum states. These theories are shown to have a wide range of possible…
Simple Matrix Elements with Dynamical Fermions
The High Energy Monte Carlo Grand Challenge
We report on studies of simple matrix elements from simulations with two flavors of sea quarks, both staggered and Wilson. We show the decay constants of vector and pseudoscalar me…
Status of the Higgs Mass Bound
Urs M. Heller
The status of the triviality bound of the Higgs mass in the Minimal Standard Model is reviewed. It is emphasized that the bound is obtained, in the scalar sector, by limiting cutof…
Effects of spatial size, lattice doubling and source operator on the hadron spectrum with dynamical staggered quarks
Khalil M. Bitar, R. Edwards, Steven Gottlieb +11
We have extended our previous study of the lattice QCD spectrum with 2 flavors of staggered dynamical quarks at and and 0.01 to larger lattices, with bette…
An Exact Local Hybrid Monte Carlo Algorithm for Gauge Theories
A. D. Kennedy, K. M. Bitar
We introduce a new Monte Carlo method for pure gauge theories. It is not intended for use with dynamical fermions. It belongs to the class of Local Hybrid Monte Carlo (LHMC) algori…
The Nambu--Jona-Lasinio Model of QCD on the Lattice
K. M. Bitar, P. M. Vranas
In an effort to investigate some of the low energy properties of QCD, in particular those related to chiral symmetry breaking, as well as to obtain insights on the behavior of an i…
A Study of the Nambu--Jona-Lasinio Model on the Lattice
K. M. Bitar, P. M. Vranas
We present our full analysis of the two flavor Nambu--Jona-Lasinio model with chiral symmetry on the four--dimensional hypercubic lattice with naive and Wilson…
Hadron Spectrum and Matrix Elements in QCD with Dynamical Wilson Fermions at 6/g^2=5.3
K. M. Bitar
We present results of a lattice simulation of quantum chromodynamics with two degenerate flavors of dynamic Wilson fermions at at each of two dynamical fermion hopping…
Glueball-Like Screening Masses in Pure SU(3) at Finite Temperatures
B. Grossman, Sourendu Gupta, U. M. Heller +1
We investigate the finite-temperature excitation spectrum in the gluon sector of pure gauge theory through measurements of screening masses in correlations of loop operator…
Computation of the Spatial String Tension in High Temperature SU(2) Gauge Theory
G. S. Bali, J. Fingberg, U. M. Heller +2
A detailed investigation of the temperature dependence of the spatial string tension in gauge theory is presented. A sustained performance of 3~GFLOPS on a 64K Connec…
On Spin and Matrix Models in the Complex Plane
Poul H. Damgaard, Urs M. Heller
We describe various aspects of statistical mechanics defined in the complex temperature or coupling-constant plane. Using exactly solvable models, we analyse such aspects as renorm…
Adjoint Wilson Line in SU(2) Lattice Gauge Theory
J. Kiskis, P. Vranas
The behavior of the adjoint Wilson line in finite-temperature, , lattice gauge theory is discussed. The expectation value of the line and the associated excess free energy r…
The Spatial String Tension in the Deconfined Phase of the (3+1)-Dimensional SU(2) Gauge Theory
G. S. Bali, J. Fingberg, U. M. Heller +2
We present results of a detailed investigation of the temperature dependence of the spatial string tension in SU(2) gauge theory. We show, for the first time, that the spatial stri…
Phase Structure of SU(2) Lattice Gauge Theory with Quantum Gravity
Bernd A. Berg, Balasubramanian Krishnan
We investigate 4 SU(2) lattice gauge theory with Regge--Einstein quantum gravity on a dynamically coupled Regge skeleton. To overview the phase diagram we perform simulations on…
Simple Hadronic Matrix Elements with Wilson Valence Quarks and Dynamical Staggered Fermions at
K. M. Bitar, T. DeGrand, R. Edwards +13
We have measured some simple matrix elements for pseudoscalar and vector mesons made of Wilson valence quarks and staggered sea quarks at at sea quark masses an…