200 research outputs found
Glueball Masses from Hamiltonian Lattice QCD
We calculate the masses of the , and glueballs from
QCD in 3+1 dimensions using an eigenvalue equation method for Hamiltonian
lattice QCD developed and described elsewhere by the authors. The mass ratios
become approximately constants in the coupling region ,
from which we estimate and
.Comment: 12 pages, Latex, figures to be sent upon reques
QCD_3 Vacum Wave Function
We investigate quantum chromodynamics in 2+1 dimensions () using
the Hamiltonian lattice field theory approach. The long wavelength structure of
the ground state, which is closely related to the confinement phenomenon, is
analyzed and its vacuum wave function is evaluated by means of the recently
developed truncated eigenvalue equation method. The third order estimations
show nice scaling for the physical quantities.Comment: 10 pages plus 3 figures, encoded with uufiles
Improving the Lattice QCD Hamiltonian
Improvement of the Hamiltonian in lattice gauge theory is considered. We give
explicit expressions for classical improvement and discuss also quantum
corrections.Comment: 3 pages, Latex. Presented at Lattice 97: 15th International Symposium
on Lattice Field Theory, Edinburgh, Scotland, 22-26 Jul 1997, to appear in
Nucl. Phys. B(Proc. Suppl.
Truncated eigenvalue equation and long wavelength behavior of lattice gauge theory
We review our new method, which might be the most direct and efficient way
for approaching the continuum physics from Hamiltonian lattice gauge theory. It
consists of solving the eigenvalue equation with a truncation scheme preserving
the continuum limit. The efficiency has been confirmed by the observations of
the scaling behaviors for the long wavelength vacuum wave functions and mass
gaps in (2+1)-dimensional models and (1+1)-dimensional model even at
very low truncation orders. Most of these results show rapid convergence to the
available Monte Carlo data, ensuring the reliability of our method.Comment: Latex file, 4 pages, plus 4 figures encoded with uufile
Nanopore Sequencing Accurately Identifies the Mutagenic DNA Lesion O; 6; -Carboxymethyl Guanine and Reveals Its Behavior in Replication
O; 6; -carboxymethylguanine (O; 6; -CMG) is a highly mutagenic alkylation product of DNA, triggering transition mutations relevant to gastrointestinal cancer. However, precise localization of a single O; 6; -CMG with conventional sequencing platforms is challenging. Here nanopore sequencing (NPS), which directly senses single DNA bases according to their physiochemical properties, was employed to detect O; 6; -CMG. A unique O; 6; -CMG signal was observed during NPS and a single-event call accuracy of >95 % was achieved. Moreover, O; 6; -CMG was found to be a replication obstacle for Phi29 DNA polymerase (Phi29 DNAP), suggesting this lesion could cause DNA sequencing biases in next generation sequencing (NGS) approaches
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