Physics – General Physics
Scientific paper
2005-04-08
Physics
General Physics
book, 876 pages, 58 figures, 22 tables, 326 references; v3 - the book was totally rewritten; v11 - major additions; v12 - reno
Scientific paper
This book is an attempt to build a consistent relativistic quantum theory of interacting particles. In the first part of the book "Quantum electrodynamics" we present traditional views on theoretical foundations of particle physics. Our discussion proceeds systematically from the principle of relativity and postulates of measurements to the renormalization in quantum electrodynamics. In the second part of the book "The quantum theory of particles" the traditional approach is reexamined. We find that formulas of special relativity should be modified to take into account interparticle interactions. We also suggest to reinterpret quantum field theory in the language of physical "dressed" particles. In this new formulation the fundamental objects are particles rather than fields. This approach eliminates the need for renormalization and opens up a new way for studying dynamical and bound state properties of quantum interacting systems. The developed theory is applied to realistic physical objects and processes including the hydrogen atom, the decay law of moving unstable particles, the dynamics of interacting charges, and boost transformations of observables. These results force us to take a fresh look at some core issues of modern particle theories, in particular, the Minkowski space-time unification, the role of quantum fields and renormalization, and the alleged impossibility of action-at-a-distance. A new perspective on these issues is suggested. It can help to solve the biggest problem of modern theoretical physics -- a consistent unification of relativity and quantum mechanics.
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