Overview
- Introduces new discrete non-Abelian groups of symmetry, allowing non-trivial factorization of the Wigner time-reversal operator
- Develops a method for binuclear coordination compounds with predicted magnetic properties
- Indicates that traditional black-white point groups of magnetic symmetry cannot be applied to systems with KramerĀ“s degeneracy of energy levels
- Predicts and gives experimental confirmation for structural distortions in three-homo-nuclear magnetic clusters caused by time-reversal symmetry
Part of the book series: Springer Tracts in Modern Physics (STMP, volume 281)
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Table of contents(10 chapters)
About this book
This book introduces new developments in the field of Time-Reversal Symmetry presenting, for the first time, the Wigner time-reversal operator in the form of a product of two- or three time-reversal operators of lower symmetry. The action of these operators leads to the sign change of only one or two angular momentum components, not of all of them. It demonstrates that there are six modes of time-reversal symmetry breaking that do not lead to the complete disappearance of the symmetry but to its lowering. The full restoration of the time-reversal symmetry in the six cases mentioned is possible by introducing six types of metaparticles. The book also confirms the presence of six additional time-reversal operators using a group-theoretical method. The problem is only where to seek these metaparticles.
The book discusses time-reversal symmetry in classical mechanics, classical and relativistic electrodynamics, quantum mechanics and theory of quantized fields, including dynamical reversibility and statistical irreversibility of the time, Wignerās and Herringās criteria, Kramers theorem, selection rules due to time-reversal symmetry, Onsagerās relations, PoincarĆ© recurrence theorem, and CPT theorem. It particularly focuses attention on time-reversal symmetry violation. It is proposed a new method of testing the time-reversal symmetry, which is confirmed experimentally by EPR spectroscopy data.
It shows that the traditional black-white point groups of magnetic symmetry are not applicable to magnetic systems with Kramers degeneration of energy levels and that magnetic groups of four-color symmetry are adequate for them. Further, it addresses the predicted structural distortions in Kramers three-homonuclear magnetic clusters due to time-reversal symmetry that have been identified experimentally.
Lastly, it proposes a method of synthesis of two-nuclear coordination compounds with predictable magnetic properties, based on the application of the time-reversal transformation that was confirmed experimentally.
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Authors and Affiliations
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Institute of Chemistry, Academy of Sciences of Moldova, Chisinau, Moldova
Ion I. Geru
About the author
Prof. Ion I. Geru got the PhD degree in 1967. In 1986, he became professor of theoretical physics, State University of Moldova. In 1996ā1997, he was head of the Department of General Physics. In the years 2005ā2008, he was director of the National Center for Analytical Methods and Metrology of the Academy of Sciences of Moldova. In 2008-2013, he was head of the Laboratory āMagnetic Resonance and Laser Spectroscopyā, Center of Chemical Physics and Nanocomposites, Institute of Chemistry of the Academy of Sciences of Moldova. Currently, he is Chief Researcher at the same Institute.
In the years 2004ā2007, Prof. Geru was a part-time visiting professor at the Florida State University. Since 2000, he is a Corresponding Member of the Academy of Sciences of Moldova. In 1998-2017, he was member of the AMPERE Committee. Since 1984, he is the Vice-President of the Moldovan Physical Society. He has more than 330 publications and 4 books, including I. Geru, D. Suter, Resonance Effects of Excitons and Electrons: Basics and Applications, Springer-Verlag, 2013.
Bibliographic Information
Book Title: Time-Reversal Symmetry
Book Subtitle: Seven Time-Reversal Operators for Spin Containing Systems
Authors: Ion I. Geru
Series Title: Springer Tracts in Modern Physics
DOI: https://doi.org/10.1007/978-3-030-01210-6
Publisher: Springer Cham
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: Springer Nature Switzerland AG 2018
Hardcover ISBN: 978-3-030-01209-0Published: 12 January 2019
eBook ISBN: 978-3-030-01210-6Published: 31 December 2018
Series ISSN: 0081-3869
Series E-ISSN: 1615-0430
Edition Number: 1
Number of Pages: XVI, 362
Number of Illustrations: 15 b/w illustrations, 11 illustrations in colour
Topics: Magnetism, Magnetic Materials, Mathematical Methods in Physics, Optics, Lasers, Photonics, Optical Devices