B. Müller - Böcker
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2 produkter
2 produkter
Quantum Electrodynamics of Strong Fields
With an Introduction into Modern Relativistic Quantum Mechanics
Häftad, Engelska, 2011
1 589 kr
Skickas inom 10-15 vardagar
The fundamental goal of physics is an understanding of the forces of nature in their simplest and most general terms. Yet there is much more involved than just a basic set of equations which eventually has to be solved when applied to specific problems. We have learned in recent years that the structure of the ground state of field theories (with which we are generally concerned) plays an equally funda mental role as the equations of motion themselves. Heisenberg was probably the first to recognize that the ground state, the vacuum, could acquire certain prop erties (quantum numbers) when he devised a theory of ferromagnetism. Since then, many more such examples are known in solid state physics, e. g. supercon ductivity, superfluidity, in fact all problems concerned with phase transitions of many-body systems, which are often summarized under the name synergetics. Inspired by the experimental observation that also fundamental symmetries, such as parity or chiral symmetry, may be violated in nature, it has become wide ly accepted that the same field theory may be based on different vacua. Practical ly all these different field phases have the status of more or less hypothetical models, not (yet) directly accessible to experiments. There is one magnificent ex ception and this is the change of the ground state (vacuum) of the electron-posi tron field in superstrong electric fields.
876 kr
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This book describes unusual cases of cutaneous lymphomas and is of special interest for clinicians and pathologists dealing with the vexing subject of cutaneous lymphoma. In addition to the case description, it gives the clinical, histological, and in most cases also the phenotypical features and the results of molecular techniques. A commentary puts the observations into the context of cutaneous lymphomas. Related papers are cited. The book will be especially helpful in cases which do not fit into the normal spectrum of cutaneous lymphomas. Rare entities of cutaneous lymphomas are demonstrated with high-quality pictures (4-color) and a concise text in an appealing format throughout the book.