Toki Hiroshi Toki – författare

The NEWS 99 international symposium discusses symmetries in electroweak processes in nuclei. Many phenomena in nuclear and particle physics are related to symmetry. It is known that we are living in a left-handed world as far as the Weak interaction is concerned, but neutrino physics suggests that a right-handed world may also be relevant. Chiral symmetry and its breaking plays an essential role in generating hadron masses. Symmetries related to flavor in the strong interaction like isospin, SU(3) and so on are known to be violated although they play a crucial role for the understanding of phenomena in nuclear and particle physics. The treatment of tiny breaking is of particular importance. Weak and electromagnetic interactions are well established at the fundamental level and can be used to probe the structure of nuclei and hadrons.A wide variety of phenomena in nuclear and particle physics were discussed in NEWS 99 with an emphasis on symmetry. Topics ranged from nuclear structure to neutrino properties, covering highly phenomenological to fundamental fields.

This book describes baryon models constructed from quarks, mesons and chiral symmetry. The role of chiral symmetry and of quark model structure with SU(6) spin-flavor symmetry are discussed in detail, starting from a pedagogic introduction. Emphasis is placed on symmetry aspects of the theories. As an application, the chiral bag model is studied for nucleon structure, where important methods of theoretical physics, mostly related to the semiclassical approach for a system of strong interactions, are demonstrated. The text is more practical than formal; tools and ideas are explained in detail while solving actual problems. By checking each step of the computations, readers can learn not only the calculational techniques but also the essential ideas behind them.

Spin physics is one of the most important and active areas of theoretical/experimental nuclear physics. In nuclear reactions, the observations of spin polarizations give important clues to the nuclear structures and reaction mechanism. For high energy nuclear physics, the polarized quark-parton distributions of the nucleon/nucleus are studied intensively. In the study of baryon structures and nuclear astrophysics, spin is an important observable through hadron reactions.The focus of these proceedings is on the spin-dependent phenomena in nuclear and hadronic reactions and related topics in nuclear and hadron physics. The main subjects covered are: Spin polarization phenomena in nuclear and hadronic reactions; spin-dependent excitations in nuclei and spin observables; recent development in nuclear reaction theories; spin-dependent phenomena in fundamental processes; related topics

The purpose of this workshop is to discuss the various pictures of color confinement and its consequences on the properties of hadrons. We consider color confinement, chiral symmetry breaking, and the properties of QCD at finite temperature, as the fundamental subjects of QCD. We include discussions on the roles of instantons to hadron physics. We also provide ideas of critical experiments at medium to higher energies to identify the mechanism of color confinement and chiral symmetry breaking.

The quark confinement mechanism is one of the most difficult problems in particle physics, and is listed as the 7 difficult mathematical problems of the new millennium. The first person who first solves this problem will be awarded a prize of US$ 1 Million by Cray Mathematics Institute. This volume is useful for the systematic understanding of quark confinement and nonperturbative aspects of quantum chromodynamics (QCD) from the wide viewpoints of mathematical physics, lattice QCD physics and quark-hadron physics. It covers the current studies of nonperturbative QCD: quark confinement mechanism; topologies in QCD (instantons, monopoles and vortices); BRS quartet mechanism for color confinement; lattice QCD calculations for quarks, gluons and hadrons; dynamical chiral symmetry breaking and hadrons.

This volume discusses the exciting physics with new accelerator facilities, which are being constructed or proposed in various places. The facilities are RHIC (Brookhaven), CEBAF (TJINP), SPring-8 (Nishi-Harima), RIBF (RIKEN), JHP (KEK-INS), RIB (MSU), LISS (IUCF) and COSY (Juelich). RHIC aims at the creation of a QCD deconfinement phase and the study of the properties of such matter. CEBAF and SPring-8 use leptons to probe the quark-gluon structures of hadrons and nuclei. LISS and COSY use high resolution hadron beams to study hadron structures. JHP produces strong secondary hadron beams for hyper-nuclear physics and rare decay studies of basic symmetries. RIBF and RIB produce radioactive nuclear beams for the study of the nuclear structure of unstable nuclei far from beta stability, and astrophysics issues.

The recent rapid innovations in supercomputer technology are changing the concepts of numerical calculations employed in solving a wide variety of nuclear many-body problems. The purpose of the XVII RCNP International Symposium on Innovative Computational Methods in Nuclear Many-Body Problems (INNOCOM97) was to discuss the frontiers of various computational methods and to exchange ideas in wide fields of nuclear physics. The subjects discussed at the symposium covered almost all the areas of nuclear physics.

The 14th RCNP OSAKA International Symposium on Nuclear Reaction Dynamics of Nucleon-Hadron Many Body System was held in Osaka from December 6 to 9, 1995. The symposium covered current topics from Nucleon Spins and Mesons in Nuclei to Quark Lepton Nuclear Physics. Thus it included the field of hadron/nuclear physics from sub-GeV to multi-GeV energy region, as well as recent activities and development at RCNP. It was also intended to be a kind of winter school for young researchers/graduate students.This proceedings consists of the invited talks and lectures presented by leading physicists in the field and short oral presentations.