Hadronic Vacuum Polarization Effects in [alpha] Em (M [Zeta])
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Total Pages | : 16 |
Release | : 2003 |
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Total Pages | : 16 |
Release | : 2003 |
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Author | : Fred Jegerlehner |
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Total Pages | : |
Release | : 2003 |
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Author | : Fred Jegerlehner |
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Total Pages | : 8 |
Release | : 2003 |
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Author | : Fred Jegerlehner |
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Total Pages | : 10 |
Release | : 1996 |
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Author | : Fred Jegerlehner |
Publisher | : Springer Science & Business Media |
Total Pages | : 433 |
Release | : 2008 |
Genre | : Science |
ISBN | : 3540726330 |
This book reviews the present state of knowledge of the anomalous magnetic moment a=(g-2)/2 of the muon. The muon anomalous magnetic moment is one of the most precisely measured quantities in elementary particle physics and provides one of the most stringent tests of relativistic quantum field theory as a fundamental theoretical framework. It allows for an extremely precise check of the standard model of elementary particles and of its limitations.
Author | : Walter Dittrich |
Publisher | : Springer |
Total Pages | : 249 |
Release | : 2003-07-01 |
Genre | : Science |
ISBN | : 354045585X |
This book is devoted to an investigation of the vacuum of quantum elec trodynamics (QED), relying on the perturbative effective action approach. If the vacuum is probed with external perturbations, the response of the system can be analyzed after averaging over the high energy degrees of freedom. This results in an effective description of the properties of the vacuum, which are comparable to the properties of a classical medium. We concentrate primarily on the physics of slowly varying fields or soft photons by integrating out the high energy degrees of freedom, i.e. the elec trons, employing Schwinger's proper time method. We derive a new represen tation of the one loop photon polarization tensor, coupling to all orders to an arbitrary constant electromagnetic field, fully maintaining the dependence on the complete set of invariants. On the basis of effective Lagrangians, we derive the light cone condition for low frequency photons propagating in strong fields. Our formalism can be extended to various external perturbations, such as temperature and Casimir situations. We give a proof of the "unified formula" for low energy phenom ena that describes the refractive indices of various perturbed quantum vacua. In the high energy domain, we observe similarities between a vacuum with a superstrong magnetic field and a magnetized plasma. The question of mea surability of the various effects is addressed; a violation of causality is not found.
Author | : Kirill Melnikov |
Publisher | : Springer |
Total Pages | : 188 |
Release | : 2007-01-09 |
Genre | : Science |
ISBN | : 3540328076 |
The theory of the muon anomalous magnetic moment is particle physics in a nutshell. It is an interesting, exciting and difficult subject, and this book provides a comprehensive review of it. The theory of the muon anomalous magnetic moment is at the cutting edge of current research in particle physics, and any deviation between the theoretical prediction and the experimental value might be interpreted as a signal of an as-yet-unknown new physics.
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Total Pages | : 428 |
Release | : 1979 |
Genre | : Power resources |
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Total Pages | : 1400 |
Release | : 1970 |
Genre | : Nuclear energy |
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Author | : Katrin Becker |
Publisher | : Cambridge University Press |
Total Pages | : 756 |
Release | : 2006-12-07 |
Genre | : Science |
ISBN | : 9780521860697 |
String theory is one of the most exciting and challenging areas of modern theoretical physics. This book guides the reader from the basics of string theory to recent developments. It introduces the basics of perturbative string theory, world-sheet supersymmetry, space-time supersymmetry, conformal field theory and the heterotic string, before describing modern developments, including D-branes, string dualities and M-theory. It then covers string geometry and flux compactifications, applications to cosmology and particle physics, black holes in string theory and M-theory, and the microscopic origin of black-hole entropy. It concludes with Matrix theory, the AdS/CFT duality and its generalizations. This book is ideal for graduate students and researchers in modern string theory, and will make an excellent textbook for a one-year course on string theory. It contains over 120 exercises with solutions, and over 200 homework problems with solutions available on a password protected website for lecturers at www.cambridge.org/9780521860697.