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Quantum electrodynamics (QED) is the branch of relativistic quantum
field theory that deals specifically with the interactions between
charged particles. It is widely used to solve problems in many
areas of physics, such as elementary particles, atomic and
molecular systems, and solid state physics. This accessible text,
Basics of Quantum Electrodynamics, supplies a solid foundation in
this dynamic area of physics, making a direct connection to the
concepts of quantum mechanics familiar to the advanced
undergraduate student. Chapters cover the general theory of free
fields and the quantization of the scalar, electromagnetic, and
spinorial fields, which prepares readers for understanding field
interactions. The authors describe the general theory of field
interactions, introducing the scattering matrix and the
Feynman-Dyson graphs. They then discuss divergence-free
second-order processes, such as Compton and Moller scattering,
followed by divergent second-order processes, which cover vacuum
polarization and mass and charge renormalization. Providing a
modern, informative textbook, this volume illustrates the intimate
connection between quantum mechanics and QED in two basic steps:
the quantization of free fields, followed by the theory of their
interactions. The text contains solved problems to facilitate the
application of the theory, as well as a useful appendix on the
theory of distributions. The step-by-step description of the
quantization of various fields and the clear presentation of the
most important interaction processes in QED make this textbook a
useful guide for those studying physics at both the graduate and
undergraduate level, as well as a reference for teachers and
researchers in the field.
Quantum electrodynamics (QED) is the branch of relativistic quantum
field theory that deals specifically with the interactions between
charged particles. It is widely used to solve problems in many
areas of physics, such as elementary particles, atomic and
molecular systems, and solid state physics. This accessible text,
Basics of Quantum Electrodynamics, supplies a solid foundation in
this dynamic area of physics, making a direct connection to the
concepts of quantum mechanics familiar to the advanced
undergraduate student. Chapters cover the general theory of free
fields and the quantization of the scalar, electromagnetic, and
spinorial fields, which prepares readers for understanding field
interactions. The authors describe the general theory of field
interactions, introducing the scattering matrix and the
Feynman-Dyson graphs. They then discuss divergence-free
second-order processes, such as Compton and Moller scattering,
followed by divergent second-order processes, which cover vacuum
polarization and mass and charge renormalization. Providing a
modern, informative textbook, this volume illustrates the intimate
connection between quantum mechanics and QED in two basic steps:
the quantization of free fields, followed by the theory of their
interactions. The text contains solved problems to facilitate the
application of the theory, as well as a useful appendix on the
theory of distributions. The step-by-step description of the
quantization of various fields and the clear presentation of the
most important interaction processes in QED make this textbook a
useful guide for those studying physics at both the graduate and
undergraduate level, as well as a reference for teachers and
researchers in the field.
Modern physics is characterized by two great theories, which make
it fundamentally different from its predecessor: quantum theory and
theory of relativity. In this book we want to bring to the reader's
attention several solutions to problems connected to the
quantum-relativistic interaction of particles. Remarkably, such
solutions furnished rigorous and pertinent explanations of a large
set of phenomena, both in microscopic world and galactic universe.
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