Ulrich Weiss – författare

Ausgangspunkt des Handbuchs ist ein staatwissenschaftlicher Ansatz, der das Staatsdenken mit geistes- und sozialwissenschaftlichen Mitteln analysiert. Anhand der wichtigsten Staatsphilosophen und -theoretiker sowie ausgewählter Staatspraktiker führen die Artikel in alle Facetten des Staatsdenkens ein. Dabei kommen philosophische, theologische, juristische, historische, politische und soziologische Gesichtspunkte zur Sprache. Eine epochenspezifische Systematik ist nicht vorgegeben, vielmehr werden die Staatsdenker in alphabetischer Reihenfolge behandelt, um Vergleiche über alle Epochen, Kulturkreise und Ausrichtungen hinweg zu erleichtern. Dazu folgen alle Einzelbeiträge einem durchgängigen Gliederungsprinzip.Der Band wendet sich an Studierende, Wissenschaftler und Journalisten sowie an ein allgemein interessiertes Publikum. Das Handbuch dient in erster Linie als Nachschlagewerk, bietet sich aber auch als staatswissenschaftliches Lehrbuch an und gibt einen Überblick über die Teilbereiche der Disziplin, der sich zu einem umfassenden Gesamtbild zusammenfügt.

Ulrich Weiß geht der Frage nach, warum Jugendliche mit Hauptschulabschluss sich für ein Angebot im Übergangssystem und gegen eine Berufsausbildung entscheiden. Das Handeln Jugendlicher im sog. Übergangsraum wird als Handeln in Anerkennungsbeziehungen analysiert. Der Autor zeigt in einer historischen Rekonstruktion, dass der Umgang mit Ausbildungslosigkeit immer in einem prekären sozialen Anerkennungsraum lag. Anhand qualitativ-sozialwissenschaftlicher Analysen zeigt er, welche Strategien Jugendliche verfolgen, um Subjektivität in Anerkennungsbeziehungen zu erfahren. Die anerkennungstheoretische Perspektive auf das Handeln Jugendlicher im Übergangsraum ist für den wissenschaftlichen Diskurs sowie die pädagogische und die politische Praxis bedeutsam. Die Studie zeigt die Verwobenheit von Subjekt und Institutionen anhand von Anerkennungsbeziehungen; Jugendliche erleben den weiteren Schulbesuch größtenteils nicht als Ergebnis von Benachteiligung. Vielmehr ist Schule der Raum, der einenvielfältigen Einsatz von Anerkennungsstrategien ermöglicht.

Die Aufsätze dieses Buches behandeln einen selbstreflexiven Aufriß der Methodik, die lebensweltlichen Voraussetzungen methodischer Begriffsbildung, den Plan des systematischen methodischen Aufbaus sowie methodische Folgerungen hinsichtlich einer wissenschaftlichen und philosophischen Psychologie. Sie repräsentieren damit grundlegende Momente des umfangreichen Dinglerschen Werkes und mögen dazu anregen, sich einen der interessantesten Wissenschaftsphilosophen dieses Jahrhunderts neu zu erschließen. Inhalt: Methodik statt Erkenntnistheorie; 1936 - Das Unberührte. Die Definition des unmittelbar gegebenen; 1942 - Das See-lenproblem in methodischer Behandlung, Erstveröffentlichung.

This comprehensive textbook provides the fundamental concepts and methods of dissipative quantum mechanics and related issues in condensed matter physics starting from first principles. It deals with the phenomena and theory of decoherence, relaxation and dissipation in quantum mechanics that arise from the random exchange of energy with the environment. Major theoretical advances in combination with stunning experimental achievements and the arising perspective for quantum computing have brightened the field and brought it to the attention of the general community in natural sciences. Expertise in dissipative quantum mechanics is by now beneficial in a broad sphere.This book — originally published in 1992 and republished as enlarged and updated second, third and fourth edition in 1999, 2008, and 2012 — dives even deeper into the fundamental concepts, methods and applications of quantum dissipation. The fifth edition provides a self-contained and updated account of the quantum mechanics and quantum statistics of open systems. The subject matter of the book has been thoroughly revised to better comply with the needs of newcomers and the demands of the advanced readership. Most of the chapters are rewritten to enhance clarity and topicality. Four new chapters covering recent developments in the field have been added. There are about 600 references. This book is intended for use by advanced undergraduate and graduate students in physics, and for researchers active in the field. They will find the monograph as a rich and stimulating source.

This comprehensive textbook provides the fundamental concepts and methods of dissipative quantum mechanics and related issues in condensed matter physics starting from first principles. It deals with the phenomena and theory of decoherence, relaxation and dissipation in quantum mechanics that arise from the random exchange of energy with the environment. Major theoretical advances in combination with stunning experimental achievements and the arising perspective for quantum computing have brightened the field and brought it to the attention of the general community in natural sciences. Expertise in dissipative quantum mechanics is by now beneficial in a broad sphere.This book — originally published in 1992 and republished as enlarged and updated second, third and fourth edition in 1999, 2008, and 2012 — dives even deeper into the fundamental concepts, methods and applications of quantum dissipation. The fifth edition provides a self-contained and updated account of the quantum mechanics and quantum statistics of open systems. The subject matter of the book has been thoroughly revised to better comply with the needs of newcomers and the demands of the advanced readership. Most of the chapters are rewritten to enhance clarity and topicality. Four new chapters covering recent developments in the field have been added. There are about 600 references. This book is intended for use by advanced undergraduate and graduate students in physics, and for researchers active in the field. They will find the monograph as a rich and stimulating source.

Major advances in the quantum theory of macroscopic systems, in combination with stunning experimental achievements, have brightened the field and brought it to the attention of the general community in natural sciences. Today, working knowledge of dissipative quantum mechanics is an essential tool for many physicists. This book — originally published in 1990 and republished in 1999 as an enlarged second edition — delves much deeper than ever before into the fundamental concepts, methods, and applications of quantum dissipative systems, including the most recent developments.In this third edition, 26 chapters from the second edition contain additional material and several chapters are completely rewritten. It deals with the phenomena and theory of decoherence, relaxation, and dissipation in quantum mechanics that arise from the interaction with the environment. In so doing, a general path integral description of equilibrium thermodynamics and nonequilibrium dynamics is developed.

Starting from first principles, this book introduces the fundamental concepts and methods of dissipative quantum mechanics and explores related phenomena in condensed matter systems. Major experimental achievements in cooperation with theoretical advances have brightened the field and brought it to the attention of the general community in natural sciences. Nowadays, working knowledge of dissipative quantum mechanics is an essential tool for many physicists. This book — originally published in 1990 and republished in 1999 and and 2008 as enlarged second and third editions — delves significantly deeper than ever before into the fundamental concepts, methods and applications of quantum dissipative systems.This fourth edition provides a self-contained and updated account of the quantum mechanics of open systems and offers important new material including the most recent developments. The subject matter has been expanded by about fifteen percent. Many chapters have been completely rewritten to better cater to both the needs of newcomers to the field and the requests of the advanced readership. Two chapters have been added that account for recent progress in the field. This book should be accessible to all graduate students in physics. Researchers will find this a rich and stimulating source.

This book deals with the statistical mechanics and dynamics of open quantum systems moving irreversibly under the influence of a dissipative environment. The basic concepts and methods are described on the basis of a microscopic description with emphasis on the functional integral approach. The general theory for the time evolution of the density matrix of the damped system is developed. Many of the sophisticated ideas in the field are explained with simple models. The discussion includes, among others, the interplay between thermal and quantum fluctuations, quantum statistical decay, macroscopic quantum tunneling and quantum coherence.

This book deals with the statistical mechanics and dynamics of open quantum systems moving irreversibly under the influence of a dissipative environment. The basic concepts and methods are described on the basis of a microscopic description with emphasis on the functional integral approach. The general theory for the time evolution of the density matrix of the damped system is developed. Many of the sophisticated ideas in the field are explained with simple models. The discussion includes, among others, the interplay between thermal and quantum fluctuations, quantum statistical decay, macroscopic quantum tunneling and quantum coherence.

The topics discussed in the Tutzing conference are applications of path integrals in quantum chaos, quantum tunneling, Monte Carlo methods, polarons, solid state physics, physical chemistry, and others. The reports by experts in the fields are timely; the results reported are mostly new. This volume reveals how broad the range of path integral applications has become.

Recent advances in the quantum theory of macroscopic systems have brightened up the field and brought it into the focus of a general community in natural sciences. The fundamental concepts, methods and applications including the most recent developments, previously covered for the most part only in the original literature, are presented here in a comprehensive treatment to an audience who is reasonably familiar with quantum-statistical mechanics and has had rudimentary contacts with the path integral formulation.This book deals with the phenomena and theory of decoherence and dissipation in quantum mechanics that arise from the interaction with the environment. A general path integral description of equilibrium thermodynamics and non-equilibrium dynamics is developed. The approach can deal with weak and strong dissipation, and with all kinds of memory effects. Applications to numerous phenomenological and microscopic systems are presented, where emphasis is put on condensed matter and chemical physics. The basic principles and methods of preparation functions, propagating functions, and time correlation functions are described. Special attention is focused on quantum tunneling and quantum coherence phenomena of macroscopic variables. Many illustrative realistic examples are discussed in some detail. The book attempts to provide a broad perspective and to open up this rapidly developing field to interested researchers normally working in different fields.In this enlarged second edition, the nineteen chapters of the first edition have been expanded by about one-third to better meet both the requests of newcomers to the field and of advanced readers, and seven new chapters have been added that review the most recent important developments.