Helmut Satz – författare

From physics to information theory and cosmology, from the structure of animal societies to the linguistic analysis of human writing, systems consisting of many interacting constituents often show a collective behaviour not predictable from the interaction of the individual constituents. In More than the Sum of the Parts, Helmut Satz addresses different forms of this complex behaviour, which have been thoroughly investigated only in the past decades. Although these studies originate in physics, the behaviour is found to be universal, ranging from the structure of the early universe to the formation of flocks of birds, and to the frequency of words in literary texts. Complexity is thus becoming an increasingly important interdisciplinary field for future scientific research.In a conceptual and non-technical way, Satz opens up this exciting field for a general readership and those studying any field of the natural sciences.

What is the origin of the universe? What was there before the universe appeared? We are currently witnessing a second Copernican revolution: neither our Earth and Sun, nor our galaxy, nor even our universe, are the end of all things. Beyond our world, in an endless multiverse, are innumerable other universes, coming and going, like ours or different. Fourteen billion years ago, one of the many bubbles constantly appearing and vanishing in the multiverse exploded to form our universe. The energy liberated in the explosion provided the basis for all the matter our universe now contains. But how could this hot, primordial plasma eventually produce the complex structure of our present world? Does not order eventually always lead to disorder, to an increase of entropy? Modern cosmology is beginning to find out how it all came about and where it all might lead. Before Time Began tells that story.

Flocks of birds, schools of fish and swarms of locusts display amazing forms of collective motion, while huge numbers of glow worms can emit light signals with almost unbelievable synchronization. These and many other collective phenomena in animal societies take place according to laws very similar to those governing the collective behavior in the inanimate nature, such as the magnetization of iron and the light radiation of lasers. During recent years, this has led to the study of swarm behavior as a challenging new field of science, in which ideas from the physical world are applied in order to understand the formation and structure of animal swarms. From these studies, it has become clear that such collective behavior of animals emerges in a self-organized way, without any need of overall coordination. In this book, we present different swarm phenomena of the animal world and compare them to their counterparts in physics, in a conceptual and non-technical way, addressed to a general readership.

This volume contains the Proceedings of'the International Workshop "Lattice Gauge Theory 1986", held at Brookhaven National Laboratory, September 15 - 19, 1986. The meeting was the sequel to the one held at Wuppertal in 1985, the Proceedings of which have appeared in the same Plenum series. During the past few years, a considerable number of meetings on lat­ tice gauge theory have been held, on both sides of the Atlantic. With our workshop, through early planning and coordination with other prospective organizers, we tried to channel this activity into one major yearly meeting. For 1986, these efforts were successful, and it is our hope that a pattern has been set for the coming years. One result, however, was that the number of participants considerably exceeded that normally found at NATO Advanced Research Workshops. This year, a "nucleus" of NATO-supported experts induced a large number of further interested specialists to obtain their own funds - thus greatly amplifying the impact of the event. The topics covered at the workshop ranged from hadron spectra to strong interaction thermo­ dynamics; they included spontaneous symmetry breaking and Higgs models, renormalization group methods, as well as many contributions on various possible schemes for the simulation of dynamical quarks. First systematic applications of finite size scaling to lattice gauge theory were discussed, and the approach to the continuum limit was considered in detail.

This book describes our current understanding of the navigation of birds, their methods, capabilities, and achievements.

This book is a course-tested primer on the thermodynamics of strongly interacting matter – a profound and challenging area of both theoretical and experimental modern physics. Analytical and numerical studies of statistical quantum chromodynamics provide the main theoretical tool, while in experiments, high-energy nuclear collisions are the key for extensive laboratory investigations. As such, the field straddles statistical, particle and nuclear physics, both conceptually and in the methods of investigation used. The book addresses, above all, the many young scientists starting their scientific research in this field, providing them with a general, self-contained introduction that highlights the basic concepts and ideas and explains why we do what we do. Much of the book focuses on equilibrium thermodynamics: first it presents simplified phenomenological pictures, leading to critical behavior in hadronic matter and to a quark-hadron phase transition. This is followedby elements of finite temperature lattice QCD and an exposition of the important results obtained through the computer simulation of the lattice formulation. It goes on to clarify the relationship between the resulting critical behavior due to symmetry breaking/restoration in QCD, before turning to the QCD phase diagram. The presentation of bulk equilibrium thermodyamics is completed by studying the properties of the quark-gluon plasma as a new state of strongly interacting matter. The final chapters of the book are devoted to more specific topics that arise when nuclear collisions are considered as a tool for the experimental study of QCD thermodynamics. This second edition includes a new chapter on the hydrodynamic evolution of the medium produced in nuclear collisions. Since the study of flow for strongly interacting fluids has gained ever-increasing importance over the years, it is dealt with it in some detail, including comments on gauge/gravity duality. Moreover, other aspects ofexperimental studies are brought up to date, such as the search for critical behavior in multihadron production, the calibration of quarkonium production in nuclear collisions, and the relation between strangeness suppression and deconfinement.

Vogelschwärme führen komplexe Manöver aus über uns am Himmel, Fische vollbringen Ähnliches in den Tiefen der See. Im asiatischen Dschungel zeigen Leuchtkäfer Lichtvorführungen, in denen Tausende von Käfern in perfekter, synchroner Harmonie strahlen. Diese und ähnliche Vorgänge haben dazu geführt, dass Mathematiker und Physiker sich mit Kollegen der Biologie zusammengefunden haben, um die dem Schwarmverhalten zugrunde liegende Struktur zu erforschen. Tatsächlich ist diese Struktur universell und ähnlich der, die man in der Physik vieler wechselwirkender Teilchen findet. Das Entstehen und die Struktur eines Vogelschwarms entsprechen in vieler Hinsicht der Magnetisierung von Eisen, bei der ganz plötzlich die Spins der meisten Atome in die gleiche Richtung weisen. Die Synchronisierung der Leuchtkäferstrahlung wiederum beruht auf Mechanismen, die der Lichtemission eines Lasers ähneln. Dieses Buch beschreibt die verschiedenen Formen des Schwarmverhaltens von Tiergemeinschaften und stellt diesen dann die entsprechenden Strukturen in Physik und Informatik gegenüber. Doch keine Angst: es wird nur einfache Mathematik benötigt, und auch die angeführte Physik und Biologie bewegt sich auf allgemeinverständlichem Niveau. Erleben Sie mit, wie aus einfachen Gesetzmäßigkeiten die komplexesten Phänomene entstehen können - ohne dass es einer zentralen Kontrollinstanz bedarf.

The aim of this book is to offer to the next generation of young researchers a broad and largely self-contained introduction to the physics of heavy ion collisions and the quark-gluon plasma, providing material beyond that normally found in the available textbooks.For each of the main aspects - QCD thermodynamics and global features of the QGP, collision hydrodynamics, electromagnetic probes, jet and quarkonium production, color glass condensate, and the gravity connection - the present volume provides extensive and pedagogical lectures, surveying the present status of both theory and experiment.A particular feature of this volume is that all lectures have been written with the active assistance of selected students present at the course in order to ensure the adequate level and coverage for the intended readership.

The aim of this book is to offer to the next generation of young researchers a broad and largely self-contained introduction to the physics of heavy ion collisions and the quark-gluon plasma, providing material beyond that normally found in the available textbooks.For each of the main aspects - QCD thermodynamics and global features of the QGP, collision hydrodynamics, electromagnetic probes, jet and quarkonium production, color glass condensate, and the gravity connection - the present volume provides extensive and pedagogical lectures, surveying the present status of both theory and experiment.A particular feature of this volume is that all lectures have been written with the active assistance of selected students present at the course in order to ensure the adequate level and coverage for the intended readership.

In the last hundred years, modern physics and cosmology have shown that there exist regions of the universe forever beyond our reach, hidden by truly ultimate horizons. Such regions exist in those remote parts of the universe where, from our point of view, space expands faster than the speed of light. They are found in black holes, where the gravity is strong enough to retain even light within its field of attraction. And in the realm of the very small, quarks must remain forever confined to their world of extreme density and can never be removed from it. The aim of this book is to describe these ultimate horizons, how they were discovered, how they shape our view of the world, and what clues we have about a world beyond them.

From the Editors Preface: "Quark Matter 1987 was attended by about 250 scientists, representing 75 research institutions around the world - the scientific community engaged in experimental and theoretical studies of high energy nuclear collisions. The central theme of the meeting was the possibility of achieving extreme energy densities in extended systems of strongly interacting matter - with the ultimate aim of creating in the laboratory a deconfined state of matter, a state in which quarks and gluons attain the active degrees of freedom. High energy accelerator beams and cosmic radiation projectiles provide the experimental tools for this endeavour; on the theoretical side, it is intimately connected to recent developments in the non-perturbative study of quantum chromodynamics. Phase transitions between hadronic matter and quark-gluon plasma are of basic interest also for our understanding of the dynamics of the early universe ... A very special feature of this Sixth Quark Matter Conference was the advent of the first experimental results from dedicated accelerator studies. These were conducted during 1986/87 at the AGS of Brookhaven National Laboratory ... and at the CERN SPS ... An intense discussion of these data formed the main activity of the meeting.

Der 4. Juli 2012 stellt ein historisches Datum für das Europäische Kernforschungszentrum CERN in Genf dar: die Verkündung der Entdeckung des letzten, vorhergesagten, noch fehlenden und lange gesuchten Elementarteilchens, des Higgs-Bosons. Ein Jahr später kommen im Rahmen der Konferenz des Zentrums  für interdisziplinäre Forschung (ZiF) in Bielefeld eine Vielzahl der mit dem Großprojekt am CERN verbundenen Wissenschaftler zusammen, um nicht nur über die Entdeckung des Teilchens, sondern vor allem über die Realisierung und Bedeutung eines derart ungeheuren Unterfangens für solch ein wissenschaftliches Großprojekt zu berichten.Der Generaldirektor des CERN, Prof. Dr. Rolf-Dieter Heuer, liefert in seinem Eröffnungsvortrag die Grundlage für die Diskussion der vielerlei Aspekte, die dabei ins Spiel kommen.So finden sich im vorliegenden Band zum einen Berichte über die Großforschung selbst: von der Entdeckung des Higgs-Teilchens über die Erforschung des Quark-Gluon-Plasmas unddie Bedeutung von Theorien der Neuen Physik, wie der Supersymmetrie, bis hin zur Gefahr durch Schwarze Mikrolöcher. Zum anderen werden Themen werden Themen wie der Bau und die Finanzierung von Großprojekten, wie dem LHC am CERN oder dem FAIR in Darmstadt, näher beleuchtet. Darüber hinaus bereichern Beiträge über die philosophischen Aspekte und kulturellen bzw. gesellschaftlichen Auswirkungen der wissenschaftlichen Großforschung am LHC den interdisziplinären Austausch um weitere Perspektiven.Durch eine Vielzahl an Informationsboxen werden dem Leser relevante Hintergründe und die notwendigen physikalischen Sachverhalte nähergebracht.

In the last hundred years, modern physics and cosmology have shown that there exist regions of the universe forever beyond our reach, hidden by truly ultimate horizons. Such regions exist in those remote parts of the universe where, from our point of view, space expands faster than the speed of light. They are found in black holes, where the gravity is strong enough to retain even light within its field of attraction. And in the realm of the very small, quarks must remain forever confined to their world of extreme density and can never be removed from it. The aim of this book is to describe these ultimate horizons, how they were discovered, how they shape our view of the world, and what clues we have about a world beyond them.

Von der Physik bis zur Informationstheorie und Kosmologie, von der Struktur tierischer Gesellschaften bis zur linguistischen Analyse der menschlichen Schrift zeigen Systeme, die aus vielen interagierenden Bestandteilen bestehen, oft ein kollektives Verhalten, das sich nicht aus der Interaktion der einzelnen Bestandteile vorhersagen lässt. In Mehr als die Summe der Teile befasst sich Helmut Satz mit verschiedenen Formen dieses komplexen Verhaltens, die erst in den letzten Jahrzehnten gründlich untersucht worden sind. Obwohl diese Studien ihren Ursprung in der Physik haben, erweist sich das Verhalten als universell und reicht von der Struktur des frühen Universums über die Bildung von Vogelschwärmen bis hin zur Häufigkeit von Wörtern in literarischen Texten. Die Komplexität wird somit zu einem immer wichtigeren interdisziplinären Bereich für die künftige wissenschaftliche Forschung.Auf konzeptionelle und nicht-technische Weise erschließt Satz dieses spannende Gebiet für eine allgemeine Leserschaft und für Studierende aller naturwissenschaftlichen Fächer.

Wohin verschwinden Vögel, wenn sie ziehen, und wie finden sie zurück? Jahr für Jahr fliegen Milliarden Zugvögel über Kontinente und Ozeane, oft über Tausende Kilometer, und erreichen dennoch punktgenau ihr Ziel. Ein Atlantiksturmtaucher aus Großbritannien, der in Boston freigelassen wird, kehrt nach zwölf Tagen in seine Höhle in Wales zurück. Albatrosse umkreisen die Erde mehrmals im Jahr und fliegen von den Fischgründen vor der brasilianischen Küste mit Nahrung direkt zu ihren Küken auf Inseln bei Neuseeland.Dieses Buch untersucht die erstaunlichen Navigationsleistungen, insbesondere der Seevögel, und die Methoden, die sie dabei nutzen: Sonnen- und Sternenkompass, das geomagnetische Feld, Geruchssignale, Schwerkraftvariationen und sogar Quantenmechanismen in der Retina. Es zeigt, wie genetische Programme mit Erfahrung und Lernen zusammenspielen und wie moderne GPS-Tracking-Experimente unser Verständnis revolutioniert haben.Anschaulich und leicht verständlich führt Helmut Satz durch die faszinierende Welt der Vogelnavigation – von klassischen Experimenten mit Tauben bis zu den neuesten Erkenntnissen über Magnetorezeption und Radikalpaar-Biochemie. Ein Buch für alle, die sich für Naturwissenschaft, Tierverhalten und die Rätsel der Evolution begeistern.