## Electrodynamics and Classical Theory of Fields & Particles"We can only hope that more such striking expositions will be written." — Bulletin of the American Mathematical SocietyThis is a systematic, covariant treatment of the classical theories of particle motion, fields, and the interaction of fields and particles. Particular attention is given to the interaction of charged particles with the electromagnetic field. The treatment throughout the book is relativistic; the author attempts, as much as possible, a coordinate free (or covariant) form of the equations both for particles and the fields. The book opens with an extensive discussion of space-time, Lorentz transformations, Lorentz-group and tensor and spinor fields. This material is essential to the understanding of many branches of theoretical physics, in particular relativistic quantum theory. Chapter II describes various relativistic forms of the fundamental problem of dynamics: describing the trajectories of particles for given external forces. The general dynamical principles to obtain the field equations and the important problems of the conservation laws are discussed in Chapter III. The second part of the book (Chapters IV-VI) is devoted to a lucid treatment of the interactions of fields and particles. Chapter IV deals with equations of motion and their solutions (the so-called Cauchy problem), focusing on the solution of field equations with Green's functions using Dirac formalism. The problem of feedback between particles and fields (radiation and radiation reaction) is taken up in Chapter V, as are questions concerning the limitations of classical field theories and classical dynamics. Dr. Barut concludes the book with an excellent exposition of the purely mechanical approach to the problem of the interactions of charged particles — the so-called action-at-a-distance formulation of electrodynamics. Problems, alternate proofs, and additional topics are included at the end of each chapter, where a useful bibliography is also provided. A general bibliography appears at the end of the book. |

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1n particular acceleration action principle angular momentum antisymmetric arbitrary canonical equations Chapter charged particle components conservation laws consider constants of motion coordinate frame corresponding defined derivatives discussed electric electrodynamics electromagnetic field energy and momentum energy-momentum tensor equation of continuity equation of motion evaluate example field equations field quantities field theory finite force four-vector gauge invariant gauge transformation given by Eq Green's functions Hamiltonian Hence homogeneous Lorentz transformations inertial frames infinitesimal inhomogeneous integral interaction introduce light cone light-like Lorentz group Lorentz space Lorentz transformations magnetic field mass point Maxwell equations Maxwell's equations Minkowski equation momenta obtain orthogonal parameters Phys physical plane wave potential quantum theories radiation field radiation reaction relations relativistic representations respect rest frame satisfied scalar field solution space-like space-like surface space-like vectors space-time spin spinor subsidiary condition symmetric term time-like vector unimodular vanishes variation vector field velocity world line zero

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Page 221 - B. Friedman, Principles and Techniques of Applied Mathematics (New York: John Wiley, 1956), or J.

Page 221 - W. Magnus and F. Oberhettinger, Special functions of mathematical physics (New York, 1949), 37.