Developments in lattice field theory and computer technology have led to dramatic advances in the use of lattice QCD to explore the quark structure of hadrons. This talk will describe selected examples, including structure functions, electromagnetic form factors, the nucleon axial charge, the origin of the nucleon spin, the transverse structure of the nucleon, and the nucleon to Delta transitio...

The influence of medium correction from an isospin dependent nucleon nucleon cross section on the fragmentation and nucleon emission in the intermediate energy heavy ion collisions was studied by using an isospin dependent quantum molecular dynamical model (IQMD). We found that the medium correction enhances the dependence of multiplicity of intermediate mass fragment Nimf and the number of nuc...

It is shown that recently proposed by R.J. Glauber the used nucleon model combined with the assumption that the nucleon consists of two constituents (a quark and a diquark) describes well the PHOBOS data on particle production at midrapidity. 1. In this note we investigate the consequences of the used nucleon model [1] in the context of the PHOBOS data on particle production at midrapidity [2–4...

In the holographic model of QCD, baryons are chiral solitons sourced by D4 flavor instantons in bulk of size 1/ √ λ with λ = gNc. Using the ADHM construction we explicit the exact two-instanton solution in bulk. We use it to construct the core NN potential to order Nc/λ. The core sources meson fields to order √ Nc/λ which are shown to contribute to the NN interaction to order Nc/λ. In holograph...

We compare three semi-microscopic theories to the first data on particle production in central Au+Au collisions taken at RHIC by the PHOBOS collaboration as well as to existing data on central Pb+Pb collisions taken at the SPS by the NA49 collaboration. LEXUS represents the SPS data quite well but not the RHIC data, whereas the wounded nucleon model does the opposite. The collective tube model ...

Photoand electroproduction processes of K on the deuteron are investigated theoretically. Modern hyperon-nucleon forces as well as an updated kaon production operator on the nucleon are used. Sizable effects of the hyperon-nucleon final state interaction are seen in various observables. Especially the photoproduction double polarization observable Cz is shown to provide a handle to distinguish ...

Properties of the three-nucleon bound state are examined in the Faddeev formalism, in which the quark-model nucleon-nucleon interaction is explicitly incorporated to calculate the off-shell T -matrix. The most recent version, fss2, of the Kyoto-Niigata quark-model potential yields the ground-state energy E(3H) = −8.514 MeV in the 34 channel calculation, when the np interaction is used for the n...

In relativistic field models nucleons and mesons are all regarded as point-like particles. These models can be used to describe main properties of nuclear matter. In fact, however, a nucleon has a definite size. It is wellknown that in standard state of nuclear matter, the total volume occupied by all nucleons is about ten percent of the volume of nuclear matter. In the conditions of extreme hi...