The isospin chemical potential region is known as the sign-problem free of quantum chromodynamics (QCD). In this paper, we introduce to three-dimensional three-state Potts model mimic dense QCD; e.g., QCD effective with heavy quarks at finite density. We call it QCD-like model. does not have sign problem, but can expect that shares some properties QCD. Since obtain non-approximated spin configu...

QCD To reduce the size of this section's PostScript file, we have divided it into two PostScript files. We present the following index: PART 1 Page # Section name 1 9.1 The QCD Lagrangian 2 9.2 The QCD coupling and renormalization scheme 6 9.3 QCD in deep-inelastic scattering 9 9.4 QCD in decays of the τ lepton 11 9.5 QCD in high-energy hadron collisions PART 2

Protons and neutrons have a rich structure in terms of their constituents, the quarks and gluons. Understanding this structure requires solving Quantum Chromodynamics (QCD). However QCD is extremely complicated, so we must numerically solve the equations of QCD using a method known as lattice QCD. Here we describe a typical lattice QCD calculation by examining our recent computation of the nucl...

In these lectures, we introduce finite temperature QCD on the lattice to nonexperts of the subject. We first formulate lattice QCD both at zero and finite temperatures. Then a section is devoted to the topic of improved lattice actions which are becoming an essential ingredient of precision studies of QCD on the lattice. We then discuss about finite temperature SU(3) gauge theory, i.e. QCD with...

I report on lattice QCD calculations that study the properties of the a0 and f0 mesons.

The paper is devoted to the calculation of additional two-loop O(αs) MSSM corrections to the relation between the pole mass of the t-quark and its running mass in the DR scheme. Firstly, a contribution from axial part of the quark self-energy, which was erroneously omitted in our earlier work, is obtained. Secondly, the value of the second order contribution from large mass expansion in mt/MSUS...

An overview of lattice results for the strange quark mass, BK , B6, B7, and B8 is presented. I give my assessment of the reliability of various estimates and prospects for future improvements.

I review recent progress and results in lattice QCD obtained using fermions with exact chiral symmetry.