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String theory is the candidate for the unification of all fundamental interactions including gravity. In the past few years this active field of research has developed very rapidly and in several different directions. The aim of the conference is to give an overview of the status of the art in string theory through the contributions of the major experts in this field. The main topics include: string unification and effective Lagrangians, N=2 string theories, 2-d quantum gravity, stringy black holes, topological field theory, conformal field theories, strings and quantum field theory.
A clear, plain-English guide to this complex scientific theory String theory is the hottest topic in physics right now, with books on the subject (pro and con) flying out of the stores. String Theory For Dummies offers an accessible introduction to this highly mathematical "theory of everything," which posits ten or more dimensions in an attempt to explain the basic nature of matter and energy. Written for both students and people interested in science, this guide explains concepts, discusses the string theory's hypotheses and predictions, and presents the math in an approachable manner. It features in-depth examples and an easy-to-understand style so that readers can understand this controversial, cutting-edge theory.
The contemporary trends in the quantum unification of all interactions including gravity motivate this Course. The main goal and impact of modern string theory is to provide a consistent quantum theory of gravity. This, Course is intended to provide an updated understanding of the last developments and current problems of string theory in connection with gravity and the physics at the Planck energy scale. It is also the aim of this Course to discuss fundamental problems of quantum gravity in the present-day context irrespective of strings or any other models. Emphasis is given to the mutual impact of string theory, gravity and cosmology, within a deep a well defined programme, which provides, in addition, a careful interdisciplinarity. Since the most relevant new physics provided by strings concerns the quantization of gravity, we must, at least, understand string quantization in curved space-times to start. Curved space-times, besides their evident relevance m classical gravitation, are also important at energies of the order of the Planck scale. At the Planck energy, gravitational interactions are at least as important as the rest and can not be neglected anymore. Special care is taken here to provide the grounds of the different lines of research in competition (not just only one approach); this provides an excellent opportunity to learn about the real state of the discipline, and to learn it in a critical way.
Embark on an awe-inspiring intellectual odyssey with "By Playing the String Theory." This mesmerizing book invites readers to venture into the profound depths of the universe, exploring the enigmatic realm of String Theory. With meticulous attention to detail, the author skillfully unravels the intricate tapestry of this captivating scientific framework, providing a comprehensive and accessible exploration. In "By Playing the String Theory," you will embark on a transformative journey that goes beyond the confines of traditional scientific literature. The author's passion for the subject shines through as they present complex concepts with clarity and eloquence, offering readers a chance to comprehend the essence of String Theory's beauty. Prepare to have your mind expanded and your imagination ignited as you traverse the realms of theoretical physics. Through vivid descriptions and thought-provoking insights, this book bridges the gap between the esoteric and the tangible, making even the most abstract concepts tangible and relatable. From the fundamental nature of reality to the exquisite symphony of vibrating strings that compose our universe, "By Playing the String Theory" delves deep into the mysteries that have captivated physicists and thinkers for generations. The author deftly guides readers through a myriad of topics, including multidimensional universes, quantum gravity, and the cosmic dance of particles. But this book is more than just a theoretical exploration. It is an invitation to engage with the wonders of the cosmos on a personal level. It challenges readers to question their own perceptions, to peel back the layers of their understanding, and to embrace the infinite possibilities that lie before them. With its eloquent prose and captivating narrative, "By Playing the String Theory" will inspire both seasoned physicists and curious minds alike. It is a symphony of knowledge, offering readers the chance to glimpse the harmony that underlies our existence and to contemplate the profound questions that stir the depths of our souls. Whether you are a seeker of scientific truth, an avid reader of intellectual pursuits, or simply someone intrigued by the mysteries of the universe, this book promises to be an enthralling companion. Get ready to embark on a journey of discovery, as "By Playing the String Theory" takes you beyond the realm of ordinary understanding and into the extraordinary realms of possibility.
This book takes a pedagogical approach to explaining quantum gravity, supersymmetry and string theory in a coherent way. It is aimed at graduate students and researchers in quantum field theory and high-energy physics. The first part of the book introduces quantum gravity, without requiring previous knowledge of general relativity (GR). The necessary geometrical aspects are derived afresh leading to explicit general Lagrangians for gravity, including that of general relativity. The quantum aspect of gravitation, as described by the graviton, is introduced and perturbative quantum GR is discussed. The Schwinger-DeWitt formalism is developed to compute the one-loop contribution to the theory and renormalizability aspects of the perturbative theory are also discussed. This follows by introducing only the very basics of a non-perturbative, background-independent, formulation of quantum gravity, referred to as “loop quantum gravity”, which gives rise to a quantization of space. In the second part the author introduces supersymmetry and its consequences. The generation of superfields is represented in detail. Supersymmetric generalizations of Maxwell’s Theory as well as of Yang-Mills field theory, and of the standard model are worked out. Spontaneous symmetry breaking, improvement of the divergence problem in supersymmetric field theory, and its role in the hierarchy problem are covered. The unification of the fundamental constants in a supersymmetric version of the standard model are then studied. Geometrical aspects necessary to study supergravity are developed culminating in the derivation of its full action. The third part introduces string theory and the analysis of the spectra of the mass (squared) operator associated with the oscillating strings. The properties of the underlying fields, associated with massless particles, encountered in string theory are studied in some detail. Elements of compactification, duality and D-branes are given, as well of the generation of vertices and interactions of strings. In the final sections, the author shows how to recover GR and the Yang-Mills field Theory from string theory.
During its forty year lifespan, string theory has always had the power to divide, being called both a 'theory of everything' and a 'theory of nothing'. Critics have even questioned whether it qualifies as a scientific theory at all. This book adopts an objective stance, standing back from the question of the truth or falsity of string theory and instead focusing on how it came to be and how it came to occupy its present position in physics. An unexpectedly rich history is revealed, with deep connections to our most well-established physical theories. Fully self-contained and written in a lively fashion, the book will appeal to a wide variety of readers from novice to specialist.
String Theory takes on one of modern physics’ most complicated and enthralling candidates for the theory of everything—a possible universal answer to all applied sciences. By examining some of the fundamentals of physics such as electricity, magnetism, and light, as well as how these elements were discovered, the book analyzes how scientists have built the still unproven theory and seeks to effectively explore all the scientific opportunities its possible existence could provide.
Leading theorists share their important insights into the ongoing quest of theoretical physics to find a quantum theory of gravity.