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An extension of Dr. Schwinger's two previous classic works, this
volume contains four sections in addition to the previous sections
of Electrodynamics II, which were concerned with the two-particle
problem, and applications to hydrogenic atoms, positronium, and
muonium.
This classic, the first of three volumes, presents techniques that
emphasize the unity of high-energy particle physics with
electrodynamics, gravitational theory, and many-particle
cooperative phenomena. What emerges is a theory intermediate in
position between operator field theory and S-matrix theory, which
rejects the dogmas of each and gains thereby a calculational ease
and intuitiveness that make it a worthy contender to displace the
earlier formulations.
This classic book (volume two of three volumes) is almost
exclusively concerned with quantum electrodynamics. As such, it is
retrospective in its subject matter. The topics discussed range
from anomalous magnetic moments and vacuum polarization, in a
variety of applications, to the energy level displacements in
hydrogenic atoms, with occasional excursions into nuclear and
high-energy physics. Based as it is upon the conceptually and
computationally simple foundations of source theory, little in the
way of formal mathematical apparatus is required, and thus most of
the book is devoted to the working out of physical problems.
A classic from 1969, this book is based on a series of lectures
delivered at the Les Houches Summer School of Theoretical Physics
in 1955. The book outlines a general scheme of quantum kinematics
and dynamics.
A classic from 1969, this book is based on a series of lectures
delivered at the Les Houches Summer School of Theoretical Physics
in 1955. The book outlines a general scheme of quantum kinematics
and dynamics.
Classical Electrodynamics captures Schwinger's inimitable lecturing
style, in which everything flows inexorably from what has gone
before. Novel elements of the approach include the immediate
inference of Maxwell's equations from Coulomb's law and (Galilean)
relativity, the use of action and stationary principles, the
central role of Green's functions both in statics and dynamics,
and, throughout, the integration of mathematics and physics. Thus,
physical problems in electrostatics are used to develop the
properties of Bessel functions and spherical harmonics. The latter
portion of the book is devoted to radiation, with rather complete
treatments of synchrotron radiation and diffraction, and the
formulation of the mode decomposition for waveguides and
scattering. Consequently, the book provides the student with a
thorough grounding in electrodynamics in particular, and in
classical field theory in general, subjects with enormous practical
applications, and which are essential prerequisites for the study
of quantum field theory.An essential resource for both physicists
and their students, the book includes a ?Reader's Guide,? which
describes the major themes in each chapter, suggests a possible
path through the book, and identifies topics for inclusion in, and
exclusion from, a given course, depending on the instructor's
preference. Carefully constructed problems complement the material
of the text, and introduce new topics. The book should be of great
value to all physicists, from first-year graduate students to
senior researchers, and to all those interested in electrodynamics,
field theory, and mathematical physics.The text for the graduate
classical electrodynamics course was left unfinished upon Julian
Schwinger's death in 1994, but was completed by his coauthors, who
have brilliantly recreated the excitement of Schwinger's novel
approach.
In first volume the author realised how the phenomenological source
concept could be freed from its operator substructure and used as
the basis for a completely independent development, with much
closer ties to experiment. What emerges is a theory intermediate in
position between operator field theory and S-matrix theory, which
rejects the dogmas of each and gains thereby a calculational ease
and intuitiveness that make it a worthy contender to displace the
earlier formulations.
This classic book (volume two of three volumes) is almost
exclusively concerned with quantum electrodynamics. As such, it is
retrospective in its subject matter. The topics discussed range
from anomalous magnetic moments and vacuum polarization, in a
variety of applications, to the energy level displacements in
hydrogenic atoms, with occasional excursions into nuclear and
high-energy physics. Based as it is upon the conceptually and
computationally simple foundations of source theory, little in the
way of formal mathematical apparatus is required, and thus most of
the book is devoted to the working out of physical problems.
Julian Schwinger had plans to write a textbook on quantum mechanics
since the 1950s when he was teaching the subject at Harvard
University regularly. * t Roger Newton remembers: A] group of us
(Stanley Deser, Dick Arnowitt, Chuck Zemach, Paul Martin and I
forgot who else) wrote up lecture notes on his Quantum Mechanics
course but he never wanted them published because he "had not yet
found the perfect way to do quantum mechanics. " The only text of
those days that got published eventually - following a sug gestion
by, and with the help of, Robert Kohler: : - were the notes to the
lectures that Schwinger presented at Les Houches in 1955. The book
was reissued in 1991, with this Special Preface by Schwinger 3]:
The first two chapters of this book are devoted to Quantum Kine
matics. In 1985 I had the opportunity to review that development in
connection with the celebration of the 100th anniversary of Hermann
Weyl's birthday. . . . ] In presenting my lecture 4] I felt the
need to alter only one thing: the notation. Lest one think this
rather triv ial, recall that the ultimate abandonment, early in the
19th century, of Newton's method of fluxions in favor of the
Leibnizian calculus, stemmed from the greater flexibility of the
latter's notation."
Julian Schwinger was already the world's leading nuclear theorist
when he joined the Radiation Laboratory at MIT in 1943, at the ripe
age of 25. Just 2 years earlier he had joined the faculty at
Purdue, after a postdoc with OppenheimerinBerkeley,
andgraduatestudyatColumbia. Anearlysemester at Wisconsin had
con?rmed his penchant to work at night, so as not to have to
interact with Breit and Wigner there. He was to perfect his
iconoclastic 1 habits in his more than 2 years at the Rad Lab.
Despite its deliberately misleading name, the Rad Lab was not
involved in nuclear physics, which was imagined then by the
educated public as a esoteric science without possible military
application. Rather, the subject at hand was the perfection of
radar, the beaming and re?ection of microwaves which had already
saved Britain from the German onslaught. Here was a technology
which won the war, rather than one that prematurely ended it, at a
still incalculable cost. It was partly for that reason that
Schwinger joined this e?ort, rather than what might have appeared
to be the more natural project for his awesome talents, the
development of nuclear weapons at Los Alamos. He had got a bit of a
taste of that at the "Metallurgical Laboratory" in Chicago, and did
not much like it. Perhaps more important for his decision to go to
and stay at MIT during the war was its less regimented and isolated
environment.
Julian Schwinger was already the world's leading nuclear theorist
when he joined the Radiation Laboratory at MIT in 1943, at the ripe
age of 25. Just 2 years earlier he had joined the faculty at
Purdue, after a postdoc with OppenheimerinBerkeley,
andgraduatestudyatColumbia. Anearlysemester at Wisconsin had
con?rmed his penchant to work at night, so as not to have to
interact with Breit and Wigner there. He was to perfect his
iconoclastic 1 habits in his more than 2 years at the Rad Lab.
Despite its deliberately misleading name, the Rad Lab was not
involved in nuclear physics, which was imagined then by the
educated public as a esoteric science without possible military
application. Rather, the subject at hand was the perfection of
radar, the beaming and re?ection of microwaves which had already
saved Britain from the German onslaught. Here was a technology
which won the war, rather than one that prematurely ended it, at a
still incalculable cost. It was partly for that reason that
Schwinger joined this e?ort, rather than what might have appeared
to be the more natural project for his awesome talents, the
development of nuclear weapons at Los Alamos. He had got a bit of a
taste of that at the "Metallurgical Laboratory" in Chicago, and did
not much like it. Perhaps more important for his decision to go to
and stay at MIT during the war was its less regimented and isolated
environment.
The lecture notes of Julian Schwinger's UCLA course consist of three parts corresponding to the three quarters of teaching. The first part begins with an analysis of Stern--Gerlach-type experiments which accomplishes a self-contained physical and mathematical development of the general structure of quantum kinematics. The second part proceeds from there. The response to infinitesimal time displacements yields the equations of motion. Then the Quantum Action Principle (QAP) is derived, and accepted as a fundamental principle. In a sense, the rest of part two and all of part three consist of instructive applications of the QAP.
This volume contains four sections in addition to the previous
sections of electrodynamics II, which were concerned with the
two-particle problem, and applications to hydrogenic atoms,
positronium, and muonium. Although the major objective here is an
improved treatment of the electron magnetic moment, attention is
also given to the effect of string magnetic fields, to an extended
treatment of photon propagation function, and to a confrontational
discussion on the pion decay into two photons.
How quantum electrodynamics evolved in the first quarter of the 20th century, revealed here by its creators in 34 papers by Foley, Fermi, Heisenberg, Dryson, Weisskopf, Oppenheimer, Pauli, Schwinger, Klein and other key figures. 29 are in English, three in German, one each in French and Italian. Preface. Historical commentary.
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