Quantum physics and special relativity theory were two of the greatest breakthroughs in physics during the twentieth century and contributed to paradigm shifts in physics. This book combines these two discoveries to provide a complete description of the fundamentals of relativistic quantum physics, guiding the reader effortlessly from relativistic quantum mechanics to basic quantum field theory. The book gives a thorough and detailed treatment of the subject, beginning with the classification of particles, the Klein–Gordon equation and the Dirac equation. It then moves on to the canonical quantization procedure of the Klein–Gordon, Dirac and electromagnetic fields. Classical Yang–Mills theory, the LSZ formalism, perturbation theory, elementary processes in QED are introduced, and regularization, renormalization and radiative corrections are explored. With exercises scattered through the text and problems at the end of most chapters, the book is ideal for advanced undergraduate and graduate students in theoretical physics.
Einstein's theories of special relativity and general relativity form a core part of today's undergraduate (or Masters-level) physics curriculum. This is a supplementary problem book or student's manual, consisting of 150 problems in each of special and general relativity. The problems, which have been developed, tested and refined by the authors over the past two decades, are a mixture of short-form and multi-part extended problems, with hints provided where appropriate. Complete solutions are elaborated for every problem, in a different section of the book; some solutions include brief discussions on their physical or historical significance. Designed as a companion text to complement a main relativity textbook, it does not assume access to any specific textbook. This is a helpful resource for advanced students, for self-study, a source of problems for university teaching assistants, or as inspiration for instructors and examiners constructing problems for their lectures, homework or exams.
Quantum physics and special relativity theory were two of the greatest breakthroughs in physics during the twentieth century and contributed to paradigm shifts in physics. This book combines these two discoveries to provide a complete description of the fundamentals of relativistic quantum physics, guiding the reader effortlessly from relativistic quantum mechanics to basic quantum field theory. The book gives a thorough and detailed treatment of the subject, beginning with the classification of particles, the Klein–Gordon equation and the Dirac equation. It then moves on to the canonical quantization procedure of the Klein–Gordon, Dirac and electromagnetic fields. Classical Yang–Mills theory, the LSZ formalism, perturbation theory, elementary processes in QED are introduced, and regularization, renormalization and radiative corrections are explored. With exercises scattered through the text and problems at the end of most chapters, the book is ideal for advanced undergraduate and graduate students in theoretical physics.
A pioneering work in comparative history and social science that compares population behavior in response to adversity in Europe and Asia. This highly original book—the first in a series analyzing historical population behavior in Europe and Asia—pioneers a new approach to the comparative analysis of societies in the past. Using techniques of event history analysis, the authors examine 100,000 life histories in 100 rural communities in Western Europe and Asia to analyze the demographic response to social and economic pressures. In doing so they challenge the accepted Eurocentric Malthusian view of population processes and demonstrate that population behavior has not been as uniform as previously thought—that it has often been determined by human agency, particularly social structure and cultural practice. The authors examine the complex relationship between human behavior and social and economic environment, analyzing age, gender, family, kinship, social class and social organization, climate, food prices, and real wages to compare mortality responses to adversity. Their research at the individual, household, and community levels challenges the previously accepted characterizations of social and economic behavior in Europe and Asia in the past. The originality of the analysis as well as the geographic breadth and historical depth of the data make Life Under Pressure a significant advance in the field of historical demography. Its findings will be of interest to scholars in economics, environmental studies, demography, history, and sociology as well as the general reader interested in these subjects.
Sweden has often been described as a democratic forerunner, with one of the world's most stable party systems and with a well-functioning parliamentary system. However, the political landscape in Sweden has undergone a rapid change in recent years. The institutions of the political system – not least political parties – appear from a historical perspective to have become partly dysfunctional. The previously stable party system has become unstable. Consequently, it has become more difficult to form governments, and more difficult for governments to govern. The famous culture of consensus has been replaced by a harsher and more confrontational political climate; the tone in political debate has become more aggressive. During the so-called `golden age' of the party system, which lasted for a few decades from the middle of the twentieth century, parties could successfully mobilize broad and well-defined social interests with strong collective identities. Now, other conditions apply that have dramatically changed the role of parties in the democratic process. Parties have gone from being member-based popular movements to becoming professionalized voter-orientated campaign machines. Short-sightedness and a focus on median voters mean that the established parties have become increasingly similar, and populist parties have had great success in recent decades as a consequence. This volume, aimed at political scientists and those interested in discussion and analysis of Swedish political party dynamics, focuses on political parties in Sweden, how they have changed and what the changes mean in a wider sense.
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