Libros de Estudios y ensayos, página 10 de 142

Relativistic cosmology has in recent years become one of the most active and exciting branches of research, often considered to be today where particle physics was forty years ago, with major discoveries just waiting to happen. Consequently the part most affected by this second edition is the last part on cosmology. But there are additions, improvements, and new exercises throughout.The book''s basic purpose is unchanged. It is to make relativity come alive conceptually, and to display the grand theoretical edifice that it is, with consequences in many branches of physics. The emphasis is on the foundations, on the logical subtleties, and on presenting the necessary mathematics - including differential geometry and tensors - but always as late and in as palatable a form as possible. Aided by over 300 exercises, the book seeks to promote an in-depth understanding, and the confidence to tackle any basic problem in relativity.

Física. Mecánica, ondas y termodinámica Roller, D. E.; Blum, R. La redacción de esta obra ha llevado más de doce años. Numerosas personas han suministrado consejos, sugerencias útiles, críticas acertadas e indicaciones durante los aos que estuvieron empleando la edicion preliminar en los cursos que impartian en distintas Universidades. La organizacion de todo material didactico es esencialmente clasica, con tres excepciones importantes:1. Se escribe sobre conceptos, en vez de hacerlo sobre fenomenos aislados.2. Se incluye el material historico necesario para que el alumno pueda seguir hasta nuestros dias el crecimiento de los conocimientos cientificos actuales. 3. Se enseña al estudiante el funcionamiento y forma de utilizar la calculadora de mano programable.

El propósito de este libro a todo color consiste en proporcionar al alumno una explicación completa de los conceptos básicos de la física y prepararlo para que los emplee en su vida diaria y en su desempeño profesional a través de casi 300 ejemplos resueltos y aplicaciones en otros campos como la biología, la medicina, la arquitectura, la tecnología, las ciencias de la Tierra, el medio ambiente y la vida cotidiana.

Éste es el tercer tomo del Curso de Física de Berkeley y su principal objetivo es el de desarrollar, de forma comprensible, los conceptos ondulatorios básicos y sus íntimas relaciones. Con este propósito, el libro esta organizado en terminos de estos conceptos en lugar de estarlo segun fenomenos naturales observables, tales como sonido, luz y ...Este es el tercer tomo delCurso de Fisica de Berkeley y su principal objetivo es el de desarrollar, de forma comprensible, los conceptos ondulatorios basicos y sus intimas relaciones. Con este proposito, el libro esta organizado en terminos de estos conceptos en lugar de estarlo segun fenomenos naturales observables, tales como sonido, luz y otros.

Esta obra en dos volúmenes, de venta independiente,ofrece una introducción a la física basadaen cálculo. Es por ello herramienta fundamentalpara el estudiante de Grados de Ingeniería querequiera una base solida en Fisica.Esta tercera edicion es resultado de mas de 25años de pruebas y revisiones continuas. Cadacapitulo se completa con una seccion de problemasbreves y otra de tareas, finalizando conlas respuestas a los ejercicios propuestos a lolargo del texto.

Quantum mechanics is our most successful physical theory. However, it raises conceptual issues that have perplexed physicists and philosophers of science for decades. This book develops a new approach, based on the proposal that quantum theory is not a complete, final theory, but is in fact an emergent phenomenon arising from a deeper level of dynamics. The dynamics at this deeper level are taken to be an extension of classical dynamics to non-commuting matrix variables, with cyclic permutation inside a trace used as the basic calculational tool. With plausible assumptions, quantum theory is shown to emerge as the statistical thermodynamics of this underlying theory, with the canonical commutation/anticommutation relations derived from a generalized equipartition theorem. Brownian motion corrections to this thermodynamics are argued to lead to state vector reduction and to the probabilistic interpretation of quantum theory, making contact with recent phenomenological proposals for stochastic modifications to Schrodinger dynamics.

The intriguing mechanism of spontaneous symmetry breaking is a powerful innovative idea at the basis of most of the recent developments in theoretical physics, from statistical mechanics to many-body theory to elementary particles theory; for infinitely extended systems a symmetric Hamiltonian can account for non symmetric behaviours, giving rise to non symmetric realizations of a physical system.In the first part of this book, devoted to classical field theory, such a mechanism is explained in terms of the occurrence of disjoint sectors and their stability properties and of an improved version of the Noether theorem.For infinitely extended quantum systems, discussed in the second part, the mechanism is related to the occurrence of disjoint pure phases and characterized by a symmetry breaking order parameter, for which non perturbative criteria are discussed, following Wightman, and contrasted with the standard Goldstone perturbative strategy. The Goldstone theorem is discussed with a critical look at the hypotheses that emphasizes the crucial role of the dynamical delocalization induced by the interaction range.The Higgs mechanism in local gauges is explained in terms of the Gauss law constraint on the physical states. The mathematical details are kept to the minimum required to make the book accessible to students with basic knowledge of Hilbert space structures. Much of the material has not appeared in other textbooks.