Seven years after the first experiments in the new field of Nuclear Physics, the Highly Relativistic Heavy Ion Physics, the Nato-Advanced- Study-Institute on the 'Particle Production in Highly Excited Matter' was held from July 12 till July 24, 1992, at Il Ciocco, Castelvecchio Pascoli, near Lucca in Italy. The school took place at a mo ment when intensive efforts are mounted by the scientific community of Relativistic Heavy Ion Physics to meet the extraordinary challenge of the new upcoming physics opportunities. The gold beams of 10 GeV A at Brookhaven AGS have been sent to the experiments this Summer and we extent our congratulations to the persons and teams who made this possible. The Relativistic Heavy Ion Collider (RHIC) at Brookhaven is under construction and expected to allow experiments to see collisions in the intersec tion regions early 1998. The lead beams at the SPS at CERN scheduled for summer 1994 are eagerly awaited by 6 large experiments, and many scientists are planning the experiments at the planned LHC with heavy ions to be turned on before the year 2000. Seen against this background of rather fierce activity, we were most delighted when NATO accepted our application for an Advanced Study Institute oriented to the main subject of this young and dynamic field of research. We are very grateful to the Scientific Affairs Division of NATO and Dr. L. DaCunha, the director of the Advanced Study Institute program for giving our community this opportunity.

This conference brought together the people working on 4π detectors to discuss what had been achieved, whether the results agreed, and to think about possible collaborations to measure the excitation function of several observables. It discussed the similarities and differences in the results obtained at low (100 MeV-1 GeV) and high (10 GeV-200 GeV) energies and outlined what the different fields could learn from each other, especially concerning correlations and particle production. It surveyed the success and also the insufficiency of the present theoretical approaches and discussed the direction in which they have to improve. Finally it gave an account of new developments in data analysis (wavelets, neural networks etc.).

This book deals with the most recent achievements in the following areas of high energy physics: physics of e+e- collisions, lepton-nucleon scattering, relativistic heavy ion collisions (the quest for quark-gluon plasma), and multiparticle production. New experimental results from Tevatron, LEP, SPS and HERA and the theoretical progress in the aforementioned fields are presented.

th This workshop was the 15 in a series that addresses the subject of the dynamics of nuclear reactions. These workshops are dedicated to the concept that bringing together scientists from diverse areas of nuclear reactions promotes the vibrant exchange of ideas. This workshop hosted presentations from experimentalists and theorists, intermediate energy to ultrarelativistic energies, and final results to recent speculations. Many of these scientists would not normally be exposed to the work done in other subfields. Thus the Winter Workshop on Nuclear Dynamics plays a unique role in information exchange and the stimulation of new ides. The field of nuclear dynamics has a bright future. New accelerators are being planned and completed around the world. New detectors are being constructed. New models and theories are being developed to describe these phenomena. The Winter Workshop on Nuclear Dynamics will continue to promote this lively and compelling field of research. WOLFGANG BAUER AND GARY D. WESTFALL v Previous Workshops The following table contains a list of the dates and locations of the previous Winter Workshops on Nuclear Dynamics as well as the members of the organizing committees. The chairpersons of the conferences are underlined.

A notable feature of this volume is the emphasis on the role of quark matter as well as the cosmic QCD phase transition in cosmology and astrophysics. In addition, there are several review talks, both in experiment and theory, summarising the state of the art and projection for the near future in this important and rapidly evolving area. This book will serve as an important source for researchers and graduate students in the area of quark-gluon plasma physics, excited hadronic matter, astrophysics, cosmology and other related areas.

Written primarily for researchers and graduate students who are new in this emerging field, this book develops the necessary tools so that readers can follow the latest advances in this subject. Readers are first guided to examine the basic informations on nucleon-nucleon collisions and the use of the nucleus as an arena to study the interaction of one nucleon with another. A good survey of the relation between nucleon-nucleon and nucleus-nucleus collisions provides the proper comparison to study phenomena involving the more exotic quark-gluon plasma. Properties of the quark-gluon plasma and signatures for its detection are discussed to aid future searches and exploration for this exotic matter. Recent experimental findings are summarised.

This volume contains the lectures of invited speakers on the following topics: Collective excitations at zero and finite temperature; Algebraic and geometric symmetric nuclear models; Fundamental symmetries in nuclear physics; Fast rotating nuclei; Nuclei far from stability; Nuclear multifragmentation; Nuclear astrophysics; Subnucleonic degrees of freedom; Relativistic effects in nuclear physics; Quark-gluon plasma physics; Order and chaos in nuclear physics; Nuclear physics and atomic aggregates; Applied nuclear physics.