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20 papers · 2 filters
QCD Thermodynamics at and 12
the HEMCGC, MILC Collaborations
We present results from studies of high temperature QCD with two flavors of Kogut-Susskind quarks on lattices at a quark mass of and on $24^3\times 12…
Latest Results from Heavy Quark Simulations
John Sloan
The status of b-bbar and c-cbar calculations, numerical and analytic, are reviewed. The extraction of alpha_s and quark masses from spectrum calculations is discussed. The NRQCD an…
Universality, Scaling and Topology with a Modified Lattice Action
J. Fingberg
We examined the effect of a complete suppression of a lattice artifact, the negative plaquettes, on physical quantities, such as the critical temperature, the string tension, the t…
Cooling in QCD Spectroscopy
Robert G. Edwards, Khalil Bitar, Urs M. Heller +1
We test the cooling algorithm with gluonic and staggered hadronic spectroscopy on gauge field configurations generated with two flavors of staggered dynamical fermions. We…
Thermal Phase Transition in Mixed Action SU(3) Lattice Gauge Theory and Wilson Fermion Thermodynamics
T. Blum, C. DeTar, Urs M. Heller +3
We study the thermal phase diagram of pure SU(3) lattice gauge theory with fundamental and adjoint couplings. We improve previous estimates of the position of the bulk transition l…
SU(2) potentials in quantum gravity
W. Beirl, B. A. Berg, B. Krishnan +2
We present investigations of the potential between static charges from a simulation of quantum gravity coupled to an SU(2) gauge field on and simpli…
Preliminary heavy-light decay constants from the MILC collaboration
C. Bernard, T. Blum, A. De +10
Preliminary results from the MILC collaboration for , , , and their ratios are presented. We compute in the quenched approximation at , 6.0 and…
Two-Dimensional -Model up to Correlation Length
Sergio Caracciolo, Robert G. Edwards, Andrea Pelissetto +1
We carry out a high-precision Monte Carlo simulation of the two-dimensional -invariant -model at correlation lengths up to . Our work employs a new and powe…
New Method for the Extrapolation of Finite-Size Data to Infinite Volume
Sergio Caracciolo, Robert G. Edwards, Sabino J. Ferreira +2
We present a simple and powerful method for extrapolating finite-volume Monte Carlo data to infinite volume, based on finite-size-scaling theory. We discuss carefully its systemati…
Toward the QCD Function with Dynamical Wilson Fermions
K. M. Bitar, R. G. Edwards, U. M. Heller +2
We present data for the scaling behavior of lattice QCD with two flavors of light Wilson fermions. This is done by matching n and masses at the two lattice sizes of $16^3\t…
P-wave meson properties with Wilson quarks
M. Wingate, T. DeGrand, S. Collins +1
We describe two calculations involving P-wave mesons made of Wilson quarks: the strong coupling constant in the presence of two flavors of light dynamical fermions and the ma…
Flavor-Parity Breaking in the NJL Model with Wilson Fermions
K. M. Bitar, P. M. Vranas
The Nambu--Jona-Lasinio model is chirally symmetric. Addition of a Wilson term explicitly breaks this symmetry and leaves the model with a remaining parity-flavor symmetry. In the…
Asymptotic Scaling in the Two-Dimensional -Model at Correlation Length
Sergio Caracciolo, Robert G. Edwards, Andrea Pelissetto +1
We carry out a high-precision Monte Carlo simulation of the two-dimensional -invariant -model at correlation lengths up to . Our work employs a new and powe…
Three-dimensional model with the Chern-Simons term
Norbert Schultka, Efstratios Manousakis
We investigate the influence of the Chern-Simons term coupled to the three-dimensional model. This term endows vortices with an internal angular momentum and thus gives them…
SU(3) Lattice Gauge Theory With Adjoint Action At Nonzero Temperature
T. Blum, Carleton DeTar, Urs M. Heller +2
We study the thermal phase diagram of pure SU(3) gauge theory with fundamental and adjoint couplings. We improve previous estimates of the position of the bulk transition line and…
Finite-Size Scaling at
Sergio Caracciolo, Robert G. Edwards, Sabino José Ferreira +2
We present a simple and powerful method for extrapolating finite-volume Monte Carlo data to infinite volume, based on finite-size-scaling theory. We discuss carefully its systemati…
Scaling in the Positive Plaquette Model and Universality in SU(2) Lattice Gauge Theory
J. Fingberg, U. M. Heller, V. Mitrjushkin
We investigate universality, scaling, the beta-function and the topological charge in the positive plaquette model for SU(2) lattice gauge theory. Comparing physical quantities, li…
Precision Upsilon Spectroscopy from Nonrelativistic Lattice QCD
C. T. H. Davies, K. Hornbostel, A. Langnau +4
The spectrum of the Upsilon system is investigated using the Nonrelativistic Lattice QCD approach to heavy quarks and ignoring light quark vacuum polarization. We find good agreeme…
A New Determination of M_b Using Lattice QCD
C. T. H. Davies, K. Hornbostel, A. Langnau +5
Recent results from lattice QCD simulations provide a realistic picture, based upon first principles, of~ physics. We combine these results with the experimentally measured mass…
The heavy quark potential in QCD with 2 flavors of dynamical quarks
U. M. Heller, Khalil M. Bitar, R. G. Edwards +1
We compute the heavy quark potential on configurations generated by the HEMCGC collaboration with dynamical staggered fermions at and with dynamical Wilson fermions a…